diff --git a/Pages/Index.cshtml b/Pages/Index.cshtml
index 837648d..1d5f0ed 100644
--- a/Pages/Index.cshtml
+++ b/Pages/Index.cshtml
@@ -41,6 +41,63 @@
     </form>
 </fieldset>
 
+<fieldset>
+    <legend>Form 2</legend>
+    <form method="post">
+        <div class="form-field">
+            <label asp-for="Id"></label>
+            <input asp-for="Id"/>
+            <span asp-validation-for="Id"></span>
+        </div>
+
+        <div class="form-field">
+            <label asp-for="Control"></label>
+            <input asp-for="Control"/>
+            <span asp-validation-for="Control"></span>
+        </div>
+
+        <button type="submit" class="btn">Save</button>
+    </form>
+</fieldset>
+
+<fieldset>
+    <legend>Form 3</legend>
+    <form method="post">
+        <div class="form-field">
+            <label asp-for="Input.SomeRequiredField"></label>
+            <input asp-for="Input.SomeRequiredField"/>
+            <span asp-validation-for="Input.SomeRequiredField"></span>
+        </div>
+        <button type="submit" class="btn">Save</button>
+    </form>
+</fieldset>
+
+<fieldset>
+    <legend>Form 4</legend>
+    <form method="post">
+        <div class="form-field">
+            <label asp-for="Input.SomeRequiredField"></label>
+            <input asp-for="Input.SomeRequiredField"/>
+            <span asp-validation-for="Input.SomeRequiredField"></span>
+        </div>
+        <button type="submit" class="btn">Save</button>
+    </form>
+</fieldset>
+
+<fieldset>
+    <legend>External Form</legend>
+        <div class="form-field">
+            <label asp-for="Input.SomeRequiredField" form="external"></label>
+            <input asp-for="Input.SomeRequiredField" form="external"/>
+            <span asp-validation-for="Input.SomeRequiredField" form="external"></span>
+        </div>
+        <button type="submit" class="btn">Save</button>
+</fieldset>
+
+
+<form id="external">
+
+</form>
 
 <script src="/dist/aspnet-validation.js"></script>
 <script>
diff --git a/Pages/Index.cshtml.cs b/Pages/Index.cshtml.cs
index 5cf26a0..70ae3e4 100644
--- a/Pages/Index.cshtml.cs
+++ b/Pages/Index.cshtml.cs
@@ -34,4 +34,13 @@ public IActionResult OnPost()
         StatusMessage = "Form submission successful";
         return Page();
     }
+
+    [BindProperty]
+    public InputModel Input { get; set; } = new();
+
+    public class InputModel
+    {
+        [Required]
+        public string? SomeRequiredField { get; set; }
+    }
 }
diff --git a/dist/aspnet-validation.js b/dist/aspnet-validation.js
index b18d4da..d4b9347 100644
--- a/dist/aspnet-validation.js
+++ b/dist/aspnet-validation.js
@@ -157,18 +157,20 @@ var nullLogger = new (/** @class */ (function () {
 }()))();
 /**
  * Resolves and returns the element referred by original element using ASP.NET selector logic.
- * @param elementName
+ * @param element - The input to validate
+ * @param selector - Used to find the field. Ex. *.Password where * replaces whatever prefixes asp.net might add.
  */
-function getRelativeFormElement(elementName, selector) {
+function getRelativeFormElement(element, selector) {
     // example elementName: Form.PasswordConfirm, Form.Email
     // example selector (dafuq): *.Password, *.__RequestVerificationToken
     // example result element name: Form.Password, __RequestVerificationToken
-    var realSelector = selector.substr(2); // Password, __RequestVerificationToken
+    var elementName = element.name;
+    var realSelector = selector.substring(2); // Password, __RequestVerificationToken
     var objectName = '';
     var dotLocation = elementName.lastIndexOf('.');
     if (dotLocation > -1) {
         // Form
-        objectName = elementName.substr(0, dotLocation);
+        objectName = elementName.substring(0, dotLocation);
         // Form.Password
         var relativeElementName = objectName + '.' + realSelector;
         var relativeElement = document.getElementsByName(relativeElementName)[0];
@@ -177,7 +179,7 @@ function getRelativeFormElement(elementName, selector) {
         }
     }
     // __RequestVerificationToken
-    return document.getElementsByName(realSelector)[0];
+    return element.form.querySelector("[name=".concat(realSelector, "]"));
 }
 /**
  * Contains default implementations for ASP.NET Core MVC validation attributes.
@@ -218,7 +220,7 @@ var MvcValidationProviders = /** @class */ (function () {
             if (!params.other) {
                 return true;
             }
-            var otherElement = getRelativeFormElement(element.name, params.other);
+            var otherElement = getRelativeFormElement(element, params.other);
             if (!otherElement) {
                 return true;
             }
@@ -347,7 +349,7 @@ var MvcValidationProviders = /** @class */ (function () {
             for (var _i = 0, fieldSelectors_1 = fieldSelectors; _i < fieldSelectors_1.length; _i++) {
                 var fieldSelector = fieldSelectors_1[_i];
                 var fieldName = fieldSelector.substr(2);
-                var fieldElement = getRelativeFormElement(element.name, fieldSelector);
+                var fieldElement = getRelativeFormElement(element, fieldSelector);
                 var hasValue = Boolean(fieldElement && fieldElement.value);
                 if (!hasValue) {
                     continue;
@@ -403,7 +405,7 @@ var MvcValidationProviders = /** @class */ (function () {
 }());
 
 /**
- * Responsibles for managing the DOM elements and running the validation providers.
+ * Responsible for managing the DOM elements and running the validation providers.
  */
 var ValidationService = /** @class */ (function () {
     function ValidationService(logger) {
@@ -534,7 +536,7 @@ var ValidationService = /** @class */ (function () {
         };
         /**
          * Returns true if the provided field is valid, and then calls the callback. The form will be validated before checking, unless prevalidate is set to false
-         * @param form
+         * @param field
          * @param prevalidate
          * @param callback
          * @returns
@@ -623,24 +625,42 @@ var ValidationService = /** @class */ (function () {
      * Scans document for all validation message <span> generated by ASP.NET Core MVC, then tracks them.
      */
     ValidationService.prototype.scanMessages = function (root) {
-        var validationMessageElements = Array.from(root.querySelectorAll('[data-valmsg-for]'));
-        // querySelectorAll does not include the root element itself.
-        // we could use 'matches', but that's newer than querySelectorAll so we'll keep it simple and compatible.
-        if (root.hasAttribute("data-valmsg-for")) {
-            validationMessageElements.push(root);
-        }
-        for (var i = 0; i < validationMessageElements.length; i++) {
-            var e = validationMessageElements[i];
-            var name_1 = e.getAttribute('data-valmsg-for');
-            var spans = this.messageFor[name_1] || (this.messageFor[name_1] = []);
-            if (spans.indexOf(e) < 0) {
-                spans.push(e);
+        /* If a validation span explicitly declares a form, we group the span with that form. */
+        var validationMessageElements = Array.from(root.querySelectorAll('span[form]'));
+        for (var _i = 0, validationMessageElements_1 = validationMessageElements; _i < validationMessageElements_1.length; _i++) {
+            var span = validationMessageElements_1[_i];
+            var form = document.getElementById(span.getAttribute('form'));
+            if (form) {
+                this.pushValidationMessageSpan(form, span);
             }
-            else {
-                this.logger.log("Validation element for '%s' is already tracked", name_1, e);
+        }
+        // Otherwise if a validation message span is inside a form, we group the span with the form it's inside.
+        var forms = Array.from(root.querySelectorAll('form'));
+        if (root.tagName === 'form') {
+            // querySelectorAll does not include the root element itself.
+            // we could use 'matches', but that's newer than querySelectorAll so we'll keep it simple and compatible.
+            forms.push(root);
+        }
+        for (var _a = 0, forms_1 = forms; _a < forms_1.length; _a++) {
+            var form = forms_1[_a];
+            var validationMessageElements_3 = Array.from(form.querySelectorAll('[data-valmsg-for]'));
+            for (var _b = 0, validationMessageElements_2 = validationMessageElements_3; _b < validationMessageElements_2.length; _b++) {
+                var span = validationMessageElements_2[_b];
+                this.pushValidationMessageSpan(form, span);
             }
         }
     };
+    ValidationService.prototype.pushValidationMessageSpan = function (form, span) {
+        var formId = this.getElementUID(form);
+        var name = "".concat(formId, ":").concat(span.getAttribute('data-valmsg-for'));
+        var spans = this.messageFor[name] || (this.messageFor[name] = []);
+        if (spans.indexOf(span) < 0) {
+            spans.push(span);
+        }
+        else {
+            this.logger.log("Validation element for '%s' is already tracked", name, span);
+        }
+    };
     /**
      * Given attribute map for an HTML input, returns the validation directives to be executed.
      * @param attributes
@@ -726,6 +746,12 @@ var ValidationService = /** @class */ (function () {
         var tasks = formValidators.map(function (factory) { return factory(); });
         return Promise.all(tasks).then(function (result) { return result.every(function (e) { return e; }); });
     };
+    // Retrieves the validation span for the input.
+    ValidationService.prototype.getMessageFor = function (input) {
+        var formId = this.getElementUID(input.form);
+        var name = "".concat(formId, ":").concat(input.name);
+        return this.messageFor[name];
+    };
     /**
      * Returns true if the event triggering the form submission indicates we should validate the form.
      * @param e
@@ -803,7 +829,7 @@ var ValidationService = /** @class */ (function () {
                 if (input.classList.contains(_this.ValidationInputValidCssClassName)) {
                     input.classList.remove(_this.ValidationInputValidCssClassName);
                 }
-                var spans = _this.messageFor[input.name];
+                var spans = _this.getMessageFor(input);
                 if (spans) {
                     for (var i = 0; i < spans.length; i++) {
                         spans[i].innerHTML = '';
@@ -824,8 +850,7 @@ var ValidationService = /** @class */ (function () {
         var _this = this;
         var uid = this.getElementUID(input);
         var directives = this.parseDirectives(input.attributes);
-        var validate = this.createValidator(input, directives);
-        this.validators[uid] = validate;
+        this.validators[uid] = this.createValidator(input, directives);
         if (input.form) {
             this.trackFormInput(input.form, uid);
         }
@@ -915,9 +940,10 @@ var ValidationService = /** @class */ (function () {
      * @param message
      */
     ValidationService.prototype.addError = function (input, message) {
-        var spans = this.messageFor[input.name];
+        var spans = this.getMessageFor(input);
         if (spans) {
             for (var i = 0; i < spans.length; i++) {
+                var span = spans[i];
                 spans[i].innerHTML = message;
                 this.swapClasses(spans[i], this.ValidationMessageCssClassName, this.ValidationMessageValidCssClassName);
             }
@@ -937,7 +963,7 @@ var ValidationService = /** @class */ (function () {
      * @param input
      */
     ValidationService.prototype.removeError = function (input) {
-        var spans = this.messageFor[input.name];
+        var spans = this.getMessageFor(input);
         if (spans) {
             for (var i = 0; i < spans.length; i++) {
                 spans[i].innerHTML = '';
diff --git a/dist/aspnet-validation.min.js b/dist/aspnet-validation.min.js
index 995f589..388ad01 100644
--- a/dist/aspnet-validation.min.js
+++ b/dist/aspnet-validation.min.js
@@ -1,2 +1,2 @@
-!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.aspnetValidation=e():t.aspnetValidation=e()}(window,(function(){return function(t){var e={};function r(n){if(e[n])return e[n].exports;var a=e[n]={i:n,l:!1,exports:{}};return t[n].call(a.exports,a,a.exports,r),a.l=!0,a.exports}return r.m=t,r.c=e,r.d=function(t,e,n){r.o(t,e)||Object.defineProperty(t,e,{enumerable:!0,get:n})},r.r=function(t){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(t,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(t,"__esModule",{value:!0})},r.t=function(t,e){if(1&e&&(t=r(t)),8&e)return t;if(4&e&&"object"==typeof t&&t&&t.__esModule)return t;var n=Object.create(null);if(r.r(n),Object.defineProperty(n,"default",{enumerable:!0,value:t}),2&e&&"string"!=typeof t)for(var a in t)r.d(n,a,function(e){return t[e]}.bind(null,a));return n},r.n=function(t){var e=t&&t.__esModule?function(){return t.default}:function(){return t};return r.d(e,"a",e),e},r.o=function(t,e){return Object.prototype.hasOwnProperty.call(t,e)},r.p="",r(r.s=0)}([function(t,e,r){"use strict";r.r(e),r.d(e,"MvcValidationProviders",(function(){return o})),r.d(e,"ValidationService",(function(){return l}));var n=function(t,e,r,n){return new(r||(r=Promise))((function(a,i){function s(t){try{l(n.next(t))}catch(t){i(t)}}function o(t){try{l(n.throw(t))}catch(t){i(t)}}function l(t){var e;t.done?a(t.value):(e=t.value,e instanceof r?e:new r((function(t){t(e)}))).then(s,o)}l((n=n.apply(t,e||[])).next())}))},a=function(t,e){var r,n,a,i,s={label:0,sent:function(){if(1&a[0])throw a[1];return a[1]},trys:[],ops:[]};return i={next:o(0),throw:o(1),return:o(2)},"function"==typeof Symbol&&(i[Symbol.iterator]=function(){return this}),i;function o(o){return function(l){return function(o){if(r)throw new TypeError("Generator is already executing.");for(;i&&(i=0,o[0]&&(s=0)),s;)try{if(r=1,n&&(a=2&o[0]?n.return:o[0]?n.throw||((a=n.return)&&a.call(n),0):n.next)&&!(a=a.call(n,o[1])).done)return a;switch(n=0,a&&(o=[2&o[0],a.value]),o[0]){case 0:case 1:a=o;break;case 4:return s.label++,{value:o[1],done:!1};case 5:s.label++,n=o[1],o=[0];continue;case 7:o=s.ops.pop(),s.trys.pop();continue;default:if(!(a=s.trys,(a=a.length>0&&a[a.length-1])||6!==o[0]&&2!==o[0])){s=0;continue}if(3===o[0]&&(!a||o[1]>a[0]&&o[1]<a[3])){s.label=o[1];break}if(6===o[0]&&s.label<a[1]){s.label=a[1],a=o;break}if(a&&s.label<a[2]){s.label=a[2],s.ops.push(o);break}a[2]&&s.ops.pop(),s.trys.pop();continue}o=e.call(t,s)}catch(t){o=[6,t],n=0}finally{r=a=0}if(5&o[0])throw o[1];return{value:o[0]?o[1]:void 0,done:!0}}([o,l])}}},i=new(function(){function t(){this.warn=globalThis.console.warn}return t.prototype.log=function(t){for(var e=[],r=1;r<arguments.length;r++)e[r-1]=arguments[r]},t}());function s(t,e){var r=e.substr(2),n=t.lastIndexOf(".");if(n>-1){var a=t.substr(0,n)+"."+r,i=document.getElementsByName(a)[0];if(i)return i}return document.getElementsByName(r)[0]}var o=function(){this.required=function(t,e,r){return Boolean(t)},this.stringLength=function(t,e,r){if(!t)return!0;if(r.min){var n=parseInt(r.min);if(t.length<n)return!1}if(r.max){var a=parseInt(r.max);if(t.length>a)return!1}return!0},this.compare=function(t,e,r){if(!r.other)return!0;var n=s(e.name,r.other);return!n||n.value===t},this.range=function(t,e,r){if(!t)return!0;var n=parseFloat(t);return!isNaN(n)&&(!(r.min&&n<parseFloat(r.min))&&!(r.max&&n>parseFloat(r.max)))},this.regex=function(t,e,r){return!t||!r.pattern||new RegExp(r.pattern).test(t)},this.email=function(t,e,r){return!t||/^([^\x00-\x20\x22\x28\x29\x2c\x2e\x3a-\x3c\x3e\x40\x5b-\x5d\x7f-\xff]+|\x22([^\x0d\x22\x5c\x80-\xff]|\x5c[\x00-\x7f])*\x22)(\x2e([^\x00-\x20\x22\x28\x29\x2c\x2e\x3a-\x3c\x3e\x40\x5b-\x5d\x7f-\xff]+|\x22([^\x0d\x22\x5c\x80-\xff]|\x5c[\x00-\x7f])*\x22))*\x40([^\x00-\x20\x22\x28\x29\x2c\x2e\x3a-\x3c\x3e\x40\x5b-\x5d\x7f-\xff]+|\x5b([^\x0d\x5b-\x5d\x80-\xff]|\x5c[\x00-\x7f])*\x5d)(\x2e([^\x00-\x20\x22\x28\x29\x2c\x2e\x3a-\x3c\x3e\x40\x5b-\x5d\x7f-\xff]+|\x5b([^\x0d\x5b-\x5d\x80-\xff]|\x5c[\x00-\x7f])*\x5d))*(\.\w{2,})+$/.test(t)},this.creditcard=function(t,e,r){if(!t)return!0;if(/[^0-9 \-]+/.test(t))return!1;var n,a,i=0,s=0,o=!1;if((t=t.replace(/\D/g,"")).length<13||t.length>19)return!1;for(n=t.length-1;n>=0;n--)a=t.charAt(n),s=parseInt(a,10),o&&(s*=2)>9&&(s-=9),i+=s,o=!o;return i%10==0},this.url=function(t,e,r){if(!t)return!0;var n=t.toLowerCase();return n.indexOf("http://")>-1||n.indexOf("https://")>-1||n.indexOf("ftp://")>-1},this.phone=function(t,e,r){return!t||!/[\+\-\s][\-\s]/g.test(t)&&/^\+?[0-9\-\s]+$/.test(t)},this.remote=function(t,e,r){if(!t)return!0;for(var n=r.additionalfields.split(","),a={},i=0,o=n;i<o.length;i++){var l=o[i],u=l.substr(2),d=s(e.name,l);Boolean(d&&d.value)&&(a[u]=d.value)}var f=r.url,c=[];for(var u in a){var m=encodeURIComponent(u)+"="+encodeURIComponent(a[u]);c.push(m)}var h=c.join("&");return new Promise((function(t,e){var n=new XMLHttpRequest;if("Post"===r.type){var i=new FormData;for(var s in a)i.append(s,a[s]);n.open("post",f),n.setRequestHeader("Content-Type","application/x-www-form-urlencoded"),n.send(h)}else n.open("get",f+"?"+h),n.send();n.onload=function(r){if(n.status>=200&&n.status<300){var a=JSON.parse(n.responseText);t(a)}else e({status:n.status,statusText:n.statusText,data:n.responseText})},n.onerror=function(t){e({status:n.status,statusText:n.statusText,data:n.responseText})}}))}},l=function(){function t(t){var e=this;this.providers={},this.messageFor={},this.elementUIDs=[],this.elementByUID={},this.formInputs={},this.validators={},this.elementEvents={},this.summary={},this.debounce=300,this.allowHiddenFields=!1,this.validateForm=function(t,r){var n=e.getElementUID(t),a=e.elementEvents[n];a&&a(void 0,r)},this.preValidate=function(t){t.preventDefault(),t.stopImmediatePropagation()},this.handleValidated=function(t,r,n){r?e.submitValidForm(t,n):e.focusFirstInvalid(t)},this.submitValidForm=function(t,e){var r=new SubmitEvent("submit",e);t.dispatchEvent(r)&&t.submit()},this.focusFirstInvalid=function(t){var r=e.getElementUID(t),n=e.formInputs[r].filter((function(t){return e.summary[t]}));if(n.length>0){var a=e.elementByUID[n[0]];a&&a.focus()}},this.isValid=function(t,r,n){void 0===r&&(r=!0),r&&e.validateForm(t,n);var a=e.getElementUID(t);return 0==e.formInputs[a].filter((function(t){return e.summary[t]})).length},this.isFieldValid=function(t,r,n){if(void 0===r&&(r=!0),r){var a=t.closest("form");null!=a&&e.validateForm(a,n)}var i=e.getElementUID(t);return null!=e.summary[i]},this.ValidationInputCssClassName="input-validation-error",this.ValidationInputValidCssClassName="input-validation-valid",this.ValidationMessageCssClassName="field-validation-error",this.ValidationMessageValidCssClassName="field-validation-valid",this.ValidationSummaryCssClassName="validation-summary-errors",this.ValidationSummaryValidCssClassName="validation-summary-valid",this.logger=t||i}return t.prototype.addProvider=function(t,e){this.providers[t]||(this.logger.log("Registered provider: %s",t),this.providers[t]=e)},t.prototype.addMvcProviders=function(){var t=new o;this.addProvider("required",t.required),this.addProvider("length",t.stringLength),this.addProvider("maxlength",t.stringLength),this.addProvider("minlength",t.stringLength),this.addProvider("equalto",t.compare),this.addProvider("range",t.range),this.addProvider("regex",t.regex),this.addProvider("creditcard",t.creditcard),this.addProvider("email",t.email),this.addProvider("url",t.url),this.addProvider("phone",t.phone),this.addProvider("remote",t.remote)},t.prototype.scanMessages=function(t){var e=Array.from(t.querySelectorAll("[data-valmsg-for]"));t.hasAttribute("data-valmsg-for")&&e.push(t);for(var r=0;r<e.length;r++){var n=e[r],a=n.getAttribute("data-valmsg-for"),i=this.messageFor[a]||(this.messageFor[a]=[]);i.indexOf(n)<0?i.push(n):this.logger.log("Validation element for '%s' is already tracked",a,n)}},t.prototype.parseDirectives=function(t){for(var e={},r={},n="data-val-".length,a=0;a<t.length;a++){var i=t[a];if(0===i.name.indexOf("data-val-")){var 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t}))}))},t.prototype.shouldValidate=function(t){return!(t&&t.submitter&&t.submitter.formNoValidate)},t.prototype.trackFormInput=function(t,e){var r=this,n=this.getElementUID(t);if(this.formInputs[n]||(this.formInputs[n]=[]),-1===this.formInputs[n].indexOf(e)?this.formInputs[n].push(e):this.logger.log("Form input for UID '%s' is already tracked",e),!this.elementEvents[n]){var a=!1,i=function(e,i){if(!a&&r.shouldValidate(e)){var s=r.getFormValidationTask(n);s&&(e&&r.preValidate(e),a=!0,r.logger.log("Validating",t),s.then((function(n){if(r.logger.log("Validated (success = %s)",n,t),i)i(n);else{var a=new CustomEvent("validation",{detail:{valid:n}});t.dispatchEvent(a),r.handleValidated(t,n,e)}})).catch((function(t){r.logger.log("Validation error",t)})).finally((function(){a=!1})))}};t.addEventListener("submit",i),t.addEventListener("reset",(function(t){for(var e=0,a=r.formInputs[n];e<a.length;e++){var 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r=this.getElementUID(t),n="".concat(r,":").concat(e.getAttribute("data-valmsg-for")),a=this.messageFor[n]||(this.messageFor[n]=[]);a.indexOf(e)<0?a.push(e):this.logger.log("Validation element for '%s' is already tracked",n,e)},t.prototype.parseDirectives=function(t){for(var e={},r={},n="data-val-".length,a=0;a<t.length;a++){var i=t[a];if(0===i.name.indexOf("data-val-")){var s=i.name.substr(n);r[s]=i.value}}var o=function(t){if(-1===t.indexOf("-")){for(var n=Object.keys(r).filter((function(e){return e!==t&&0===e.indexOf(t)})),a={error:r[t],params:{}},i=(t+"-").length,s=0;s<n.length;s++){var o=r[n[s]],l=n[s].substr(i);a.params[l]=o}e[t]=a}};for(var s in r)o(s);return e},t.prototype.guid4=function(){return"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g,(function(t){var e=16*Math.random()|0;return("x"==t?e:3&e|8).toString(16)}))},t.prototype.getElementUID=function(t){var e=this.elementUIDs.filter((function(e){return e.node===t}))[0];if(e)return e.uid;var r=this.guid4();return this.elementUIDs.push({node:t,uid:r}),this.elementByUID[r]=t,r},t.prototype.getFormValidationTask=function(t){var e=this.formInputs[t];if(!e||0===e.length)return Promise.resolve(!0);for(var r=[],n=0;n<e.length;n++){var a=e[n];r.push(this.validators[a])}var i=r.map((function(t){return t()}));return Promise.all(i).then((function(t){return t.every((function(t){return t}))}))},t.prototype.getMessageFor=function(t){var e=this.getElementUID(t.form),r="".concat(e,":").concat(t.name);return this.messageFor[r]},t.prototype.shouldValidate=function(t){return!(t&&t.submitter&&t.submitter.formNoValidate)},t.prototype.trackFormInput=function(t,e){var r=this,n=this.getElementUID(t);if(this.formInputs[n]||(this.formInputs[n]=[]),-1===this.formInputs[n].indexOf(e)?this.formInputs[n].push(e):this.logger.log("Form input for UID '%s' is already tracked",e),!this.elementEvents[n]){var a=!1,i=function(e,i){if(!a&&r.shouldValidate(e)){var 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e=JSON.stringify(this.summary,Object.keys(this.summary).sort());if(e!==this.renderedSummaryJSON){this.renderedSummaryJSON=e;for(var r=this.createSummaryDOM(),n=0;n<t.length;n++){var a=t[n];a.innerHTML="",r?(this.swapClasses(a,this.ValidationSummaryCssClassName,this.ValidationSummaryValidCssClassName),a.appendChild(r.cloneNode(!0))):this.swapClasses(a,this.ValidationSummaryValidCssClassName,this.ValidationSummaryCssClassName)}}}},t.prototype.addError=function(t,e){var r=this.getMessageFor(t);if(r)for(var n=0;n<r.length;n++){r[n];r[n].innerHTML=e,this.swapClasses(r[n],this.ValidationMessageCssClassName,this.ValidationMessageValidCssClassName)}this.swapClasses(t,this.ValidationInputCssClassName,this.ValidationInputValidCssClassName);var a=t.form.querySelectorAll('input[name="'.concat(t.name,'"]'));for(n=0;n<a.length;n++)this.swapClasses(a[n],this.ValidationInputCssClassName,this.ValidationInputValidCssClassName);var i=this.getElementUID(t);this.summary[i]=e,this.renderSummary()},t.prototype.removeError=function(t){var e=this.getMessageFor(t);if(e)for(var r=0;r<e.length;r++)e[r].innerHTML="",this.swapClasses(e[r],this.ValidationMessageValidCssClassName,this.ValidationMessageCssClassName);this.swapClasses(t,this.ValidationInputValidCssClassName,this.ValidationInputCssClassName);var n=t.form.querySelectorAll('input[name="'.concat(t.name,'"]'));for(r=0;r<n.length;r++)this.swapClasses(n[r],this.ValidationInputValidCssClassName,this.ValidationInputCssClassName);var a=this.getElementUID(t);delete this.summary[a],this.renderSummary()},t.prototype.createValidator=function(t,e){var r=this;return function(){return n(r,void 0,void 0,(function(){var r,n,i,s,o,l,u,d,f,c,h;return a(this,(function(a){switch(a.label){case 0:if(this.isHidden(t))return[3,7];for(i in n=[],r=e)n.push(i);s=0,a.label=1;case 1:return s<n.length?(i=n[s])in r?(l=e[o=i],(u=this.providers[o])?(this.logger.log("Running %s validator on 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\ No newline at end of file
diff --git a/dist/aspnet-validation.min.js.map b/dist/aspnet-validation.min.js.map
index ec01fc8..9bbe6f1 100644
--- a/dist/aspnet-validation.min.js.map
+++ b/dist/aspnet-validation.min.js.map
@@ -1 +1 @@
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(value, element, params) => {\n        if (!value) {\n            return true;\n        }\n\n        let val = parseFloat(value);\n        if (isNaN(val)) {\n            return false;\n        }\n\n        if (params.min) {\n            let min = parseFloat(params.min);\n            if (val < min) {\n                return false;\n            }\n        }\n\n        if (params.max) {\n            let max = parseFloat(params.max);\n            if (val > max) {\n                return false;\n            }\n        }\n\n        return true;\n    }\n\n    /**\n     * Validates whether the input value satisfies a regular expression pattern.\n     */\n    regex: ValidationProvider = (value, element, params) => {\n        if (!value || !params.pattern) {\n            return true;\n        }\n\n        let r = new RegExp(params.pattern);\n        return r.test(value);\n    }\n\n    /**\n     * Validates whether the input value is an email in accordance to RFC822 specification, with a top level domain.\n     */\n    email: ValidationProvider = (value, element, params) => {\n        if (!value) {\n            return true;\n        }\n\n        // RFC822 email address with .TLD validation\n        // (c) Richard Willis, Chris Ferdinandi, MIT Licensed\n        // https://gist.github.com/badsyntax/719800\n        // https://gist.github.com/cferdinandi/d04aad4ce064b8da3edf21e26f8944c4\n\n        let r = /^([^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+|\\x22([^\\x0d\\x22\\x5c\\x80-\\xff]|\\x5c[\\x00-\\x7f])*\\x22)(\\x2e([^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+|\\x22([^\\x0d\\x22\\x5c\\x80-\\xff]|\\x5c[\\x00-\\x7f])*\\x22))*\\x40([^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+|\\x5b([^\\x0d\\x5b-\\x5d\\x80-\\xff]|\\x5c[\\x00-\\x7f])*\\x5d)(\\x2e([^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+|\\x5b([^\\x0d\\x5b-\\x5d\\x80-\\xff]|\\x5c[\\x00-\\x7f])*\\x5d))*(\\.\\w{2,})+$/;\n        return r.test(value);\n    }\n\n    /**\n     * Validates whether the input value is a credit card number, with Luhn's Algorithm.\n     */\n    creditcard: ValidationProvider = (value, element, params) => {\n        if (!value) {\n            return true;\n        }\n\n        // (c) jquery-validation, MIT Licensed\n        // https://github.com/jquery-validation/jquery-validation/blob/master/src/additional/creditcard.js\n        // based on https://en.wikipedia.org/wiki/Luhn_algorithm\n\n        // Accept only spaces, digits and dashes\n        if (/[^0-9 \\-]+/.test(value)) {\n            return false;\n        }\n\n        var nCheck = 0,\n            nDigit = 0,\n            bEven = false,\n            n, cDigit;\n\n        value = value.replace(/\\D/g, \"\");\n\n        // Basing min and max length on https://developer.ean.com/general_info/Valid_Credit_Card_Types\n        if (value.length < 13 || value.length > 19) {\n            return false;\n        }\n\n        for (n = value.length - 1; n >= 0; n--) {\n            cDigit = value.charAt(n);\n            nDigit = parseInt(cDigit, 10);\n            if (bEven) {\n                if ((nDigit *= 2) > 9) {\n                    nDigit -= 9;\n                }\n            }\n\n            nCheck += nDigit;\n            bEven = !bEven;\n        }\n\n        return (nCheck % 10) === 0;\n    }\n\n    /**\n     * Validates whether the input value is a URL.\n     */\n    url: ValidationProvider = (value, element, params) => {\n        if (!value) {\n            return true;\n        }\n\n        let lowerCaseValue = value.toLowerCase();\n\n        // Match the logic in `UrlAttribute`\n        return lowerCaseValue.indexOf('http://') > -1\n            || lowerCaseValue.indexOf('https://') > -1\n            || lowerCaseValue.indexOf('ftp://') > -1;\n    }\n\n    /**\n     * Validates whether the input value is a phone number.\n     */\n    phone: ValidationProvider = (value, element, params) => {\n        if (!value) {\n            return true;\n        }\n\n        // Allows whitespace or dash as number separator because some people like to do that...\n        let consecutiveSeparator = /[\\+\\-\\s][\\-\\s]/g;\n        if (consecutiveSeparator.test(value)) {\n            return false;\n        }\n\n        let r = /^\\+?[0-9\\-\\s]+$/;\n        return r.test(value);\n    }\n\n    /**\n     * Asynchronously validates the input value to a JSON GET API endpoint.\n     */\n    remote: ValidationProvider = (value, element, params) => {\n        if (!value) {\n            return true;\n        }\n\n        // params.additionalfields: *.Email,*.Username\n        let fieldSelectors: string[] = (params.additionalfields as string).split(',');\n        let fields: StringKeyValuePair = {};\n\n        for (let fieldSelector of fieldSelectors) {\n            let fieldName = fieldSelector.substr(2);\n            let fieldElement = getRelativeFormElement(element.name, fieldSelector) as HTMLInputElement;\n\n            let hasValue = Boolean(fieldElement && fieldElement.value);\n            if (!hasValue) {\n                continue;\n            }\n\n            fields[fieldName] = fieldElement.value;\n        }\n\n        let url: string = params['url'];\n\n        let encodedParams: string[] = [];\n        for (let fieldName in fields) {\n            let encodedParam = encodeURIComponent(fieldName) + '=' + encodeURIComponent(fields[fieldName]);\n            encodedParams.push(encodedParam);\n        }\n        let payload = encodedParams.join('&');\n\n        return new Promise((ok, reject) => {\n            let request = new XMLHttpRequest();\n\n            if (params.type === 'Post') {\n                let postData = new FormData();\n                for (let fieldName in fields) {\n                    postData.append(fieldName, fields[fieldName]);\n                }\n                request.open('post', url);\n                request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');\n                request.send(payload);\n            } else {\n                request.open('get', url + '?' + payload);\n                request.send();\n            }\n\n            request.onload = e => {\n                if (request.status >= 200 && request.status < 300) {\n                    let data = JSON.parse(request.responseText);\n                    ok(data);\n                } else {\n                    reject({\n                        status: request.status,\n                        statusText: request.statusText,\n                        data: request.responseText\n                    });\n                }\n            };\n\n            request.onerror = e => {\n                reject({\n                    status: request.status,\n                    statusText: request.statusText,\n                    data: request.responseText\n                });\n            };\n        });\n    }\n}\n\n/**\n * Responsibles for managing the DOM elements and running the validation providers.\n */\nexport class ValidationService {\n    /**\n     * A key-value collection of loaded validation plugins.\n     */\n    private providers: { [name: string]: ValidationProvider } = {};\n\n    /**\n     * A key-value collection of <span> elements for displaying validation messages for an input (by DOM ID).\n     */\n    private messageFor: { [id: string]: Element[] } = {};\n\n    /**\n     * A list of managed elements, each having a randomly assigned unique identifier (UID).\n     */\n    private elementUIDs: ElementUID[] = [];\n\n    /**\n     * A key-value collection of UID to Element for quick lookup.\n     */\n    private elementByUID: { [uid: string]: Element } = {};\n\n    /**\n     * A key-value collection of input UIDs for a <form> UID.\n     */\n    private formInputs: { [formUID: string]: string[] } = {};\n\n    /**\n     * A key-value map for input UID to its validator factory.\n     */\n    private validators: { [inputUID: string]: Validator } = {};\n\n    /**\n     * A key-value map for element UID to its trigger element (submit event for <form>, input event for <textarea> and <input>).\n     */\n    private elementEvents: { [id: string]: (e?: SubmitEvent, callback?: ValidatedCallback) => void } = {};\n\n    /**\n     * A key-value map of input UID to its validation error message.\n     */\n    private summary: StringKeyValuePair = {};\n\n    /**\n     * A serialized representation of the validation error message summary rendered to the user.\n     */\n    private renderedSummaryJSON: string;\n\n    /**\n     * In milliseconds, the rate of fire of the input validation.\n     */\n    debounce = 300;\n\n    /**\n     * Allow hidden fields validation\n     */\n    allowHiddenFields = false;\n\n    private logger: Logger;\n    observer?: MutationObserver;\n\n    constructor(logger?: Logger) {\n        this.logger = logger || nullLogger;\n    }\n\n    /**\n     * Registers a new validation plugin of the given name, if not registered yet.\n     * Registered plugin validates inputs with data-val-[name] attribute, used as error message.\n     * @param name\n     * @param callback\n     */\n    addProvider(name: string, callback: ValidationProvider) {\n        if (this.providers[name]) {\n            // First-Come-First-Serve validation plugin design.\n            // Allows developers to override the default MVC Providers by adding custom providers BEFORE bootstrap() is called!\n            return;\n        }\n        this.logger.log(\"Registered provider: %s\", name);\n        this.providers[name] = callback;\n    }\n\n    /**\n     * Registers the default providers for enabling ASP.NET Core MVC client-side validation.\n     */\n    private addMvcProviders() {\n        let mvc = new MvcValidationProviders();\n\n        // [Required]\n        this.addProvider('required', mvc.required);\n        // [StringLength], [MinLength], [MaxLength]\n        this.addProvider('length', mvc.stringLength);\n        this.addProvider('maxlength', mvc.stringLength);\n        this.addProvider('minlength', mvc.stringLength);\n        // [Compare]\n        this.addProvider('equalto', mvc.compare);\n        // [Range]\n        this.addProvider('range', mvc.range);\n        // [RegularExpression]\n        this.addProvider('regex', mvc.regex);\n        // [CreditCard]\n        this.addProvider('creditcard', mvc.creditcard);\n        // [EmailAddress]\n        this.addProvider('email', mvc.email);\n        // [Url]\n        this.addProvider('url', mvc.url);\n        // [Phone]\n        this.addProvider('phone', mvc.phone);\n        // [Remote]\n        this.addProvider('remote', mvc.remote);\n    }\n\n    /**\n     * Scans document for all validation message <span> generated by ASP.NET Core MVC, then tracks them.\n     */\n    private scanMessages(root: HTMLElement) {\n        let validationMessageElements = Array.from(root.querySelectorAll<HTMLElement>('[data-valmsg-for]'));\n\n        // querySelectorAll does not include the root element itself.\n        // we could use 'matches', but that's newer than querySelectorAll so we'll keep it simple and compatible.\n        if (root.hasAttribute(\"data-valmsg-for\")) {\n            validationMessageElements.push(root);\n        }\n\n        for (let i = 0; i < validationMessageElements.length; i++) {\n            let e = validationMessageElements[i];\n            let name = e.getAttribute('data-valmsg-for');\n\n            let spans = this.messageFor[name] || (this.messageFor[name] = []);\n            if (spans.indexOf(e) < 0) {\n                spans.push(e);\n            }\n            else {\n                this.logger.log(\"Validation element for '%s' is already tracked\", name, e);\n            }\n        }\n    }\n\n    /**\n     * Given attribute map for an HTML input, returns the validation directives to be executed.\n     * @param attributes\n     */\n    parseDirectives(attributes: NamedNodeMap) {\n        let directives: ValidationDirective = {};\n        let validationAtributes: StringKeyValuePair = {};\n\n        let cut = 'data-val-'.length;\n        for (let i = 0; i < attributes.length; i++) {\n            let a = attributes[i];\n            if (a.name.indexOf('data-val-') === 0) {\n                let key = a.name.substr(cut);\n                validationAtributes[key] = a.value;\n            }\n        }\n\n        for (let key in validationAtributes) {\n            if (key.indexOf('-') === -1) {\n                let parameters = Object.keys(validationAtributes).filter(Q => {\n                    return (Q !== key) && (Q.indexOf(key) === 0);\n                });\n\n                let directive: ValidationDirectiveBindings = {\n                    error: validationAtributes[key],\n                    params: {}\n                };\n\n                let pcut = (key + '-').length;\n                for (let i = 0; i < parameters.length; i++) {\n                    let pvalue = validationAtributes[parameters[i]];\n                    let pkey = parameters[i].substr(pcut);\n\n                    directive.params[pkey] = pvalue;\n                }\n\n                directives[key] = directive;\n            }\n        }\n\n        return directives;\n    }\n\n    /**\n     *  Returns an RFC4122 version 4 compliant GUID.\n     */\n    private guid4() {\n        // (c) broofa, MIT Licensed\n        // https://stackoverflow.com/questions/105034/create-guid-uuid-in-javascript/2117523#2117523\n\n        return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {\n            var r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);\n            return v.toString(16);\n        });\n    }\n\n    /**\n     * Gets a UID for an DOM element.\n     * @param node\n     */\n    private getElementUID(node: Element) {\n        let x = this.elementUIDs.filter(e => {\n            return e.node === node;\n        })[0];\n\n        if (x) {\n            return x.uid;\n        }\n\n        let uid = this.guid4();\n        this.elementUIDs.push({\n            node: node,\n            uid: uid\n        });\n        this.elementByUID[uid] = node;\n        return uid;\n    }\n\n    /**\n     * Returns a Promise that returns validation result for each and every inputs within the form.\n     * @param formUID\n     */\n    private getFormValidationTask(formUID: string) {\n        let formInputUIDs = this.formInputs[formUID];\n        if (!formInputUIDs || formInputUIDs.length === 0) {\n            return Promise.resolve(true);\n        }\n\n        let formValidators: Validator[] = [];\n\n        for (let i = 0; i < formInputUIDs.length; i++) {\n            let inputUID = formInputUIDs[i];\n            formValidators.push(this.validators[inputUID]);\n        }\n\n        let tasks = formValidators.map(factory => factory());\n        return Promise.all(tasks).then(result => result.every(e => e));\n    }\n\n    /**\n     * Fires off validation for elements within the provided form and then calls the callback\n     * @param form\n     * @param callback\n     */\n    validateForm = (form: HTMLFormElement, callback?: ValidatedCallback) => {\n        let formUID = this.getElementUID(form);\n        let formValidationEvent = this.elementEvents[formUID];\n        if (formValidationEvent) {\n            formValidationEvent(undefined, callback);\n        }\n    }\n\n    /**\n     * Called before validating form submit events.\n     * Default calls `preventDefault()` and `stopImmediatePropagation()`.\n     * @param submitEvent The `SubmitEvent`.\n     */\n    preValidate = (submitEvent: SubmitEvent) => {\n        submitEvent.preventDefault();\n        submitEvent.stopImmediatePropagation();\n    }\n\n    /**\n     * Handler for validated form submit events.\n     * Default calls `submitValidForm(form, submitEvent)` on success\n     * and `focusFirstInvalid(form)` on failure.\n     * @param form The form that has been validated.\n     * @param success The validation result.\n     * @param submitEvent The `SubmitEvent`.\n     */\n    handleValidated = (form: HTMLFormElement, success: boolean, submitEvent: SubmitEvent) => {\n        if (success) {\n            this.submitValidForm(form, submitEvent);\n        }\n        else {\n            this.focusFirstInvalid(form);\n        }\n    }\n\n    /**\n     * Dispatches a new `SubmitEvent` on the provided form,\n     * then calls `form.submit()` unless `submitEvent` is cancelable\n     * and `preventDefault()` was called by a handler that received the new event.\n     *\n     * This is equivalent to `form.requestSubmit()`, but more flexible.\n     * @param form The validated form to submit\n     * @param submitEvent The `SubmitEvent`.\n     */\n    submitValidForm = (form: HTMLFormElement, submitEvent: SubmitEvent) => {\n        const newEvent = new SubmitEvent('submit', submitEvent);\n        if (form.dispatchEvent(newEvent)) {\n            form.submit();\n        }\n    }\n\n    /**\n     * Focuses the first invalid element within the provided form\n     * @param form\n     */\n    focusFirstInvalid = (form: HTMLFormElement) => {\n        let formUID = this.getElementUID(form);\n        let formInputUIDs = this.formInputs[formUID];\n        let invalidFormInputUIDs = formInputUIDs.filter(uid => this.summary[uid]);\n\n        if (invalidFormInputUIDs.length > 0) {\n            var firstInvalid = this.elementByUID[invalidFormInputUIDs[0]] as HTMLElement;\n            if (firstInvalid) {\n                firstInvalid.focus();\n            }\n        }\n    }\n\n    /**\n     * Returns true if the provided form is valid, and then calls the callback. The form will be validated before checking, unless prevalidate is set to false\n     * @param form\n     * @param prevalidate\n     * @param callback\n     * @returns\n     */\n    isValid = (form: HTMLFormElement, prevalidate: boolean = true, callback?: ValidatedCallback) => {\n        if (prevalidate) {\n            this.validateForm(form, callback);\n        }\n        let formUID = this.getElementUID(form);\n        let formInputUIDs = this.formInputs[formUID];\n        let invalidFormInputUIDs = formInputUIDs.filter(uid => this.summary[uid]);\n        return invalidFormInputUIDs.length == 0;\n    }\n\n    /**\n     * Returns true if the provided field is valid, and then calls the callback. The form will be validated before checking, unless prevalidate is set to false\n     * @param form\n     * @param prevalidate\n     * @param callback\n     * @returns\n     */\n    isFieldValid = (field: HTMLElement, prevalidate: boolean = true, callback?: ValidatedCallback) => {\n\n        if (prevalidate) {\n            let form = field.closest(\"form\");\n            if (form != null) {\n                this.validateForm(form, callback);\n            }\n        }\n\n        let fieldUID = this.getElementUID(field);\n        return this.summary[fieldUID] != null;\n    }\n\n    /**\n     * Returns true if the event triggering the form submission indicates we should validate the form.\n     * @param e\n     */\n    private shouldValidate(e?: Event) {\n        // Skip client-side validation if the form has been submitted via a button that has the \"formnovalidate\" attribute.\n        return !(e && e['submitter'] && e['submitter']['formNoValidate']);\n    }\n\n    /**\n     * Tracks a <form> element as parent of an input UID. When the form is submitted, attempts to validate the said input asynchronously.\n     * @param form\n     * @param inputUID\n     */\n    private trackFormInput(form: HTMLFormElement, inputUID: string) {\n        let formUID = this.getElementUID(form);\n        if (!this.formInputs[formUID]) {\n            this.formInputs[formUID] = [];\n        }\n        let add = (this.formInputs[formUID].indexOf(inputUID) === -1);\n        if (add) {\n            this.formInputs[formUID].push(inputUID);\n        }\n        else {\n            this.logger.log(\"Form input for UID '%s' is already tracked\", inputUID);\n        }\n\n        if (this.elementEvents[formUID]) {\n            return;\n        }\n\n        let validating = false;\n        let cb = (e?: SubmitEvent, callback?: ValidatedCallback) => {\n            // Prevent recursion\n            if (validating) {\n                return;\n            }\n\n            if (!this.shouldValidate(e)) {\n                return;\n            }\n\n            let validate = this.getFormValidationTask(formUID);\n            if (!validate) {\n                return;\n            }\n\n            //`preValidate` typically prevents submit before validation\n            if (e) {\n                this.preValidate(e);\n            }\n\n            validating = true;\n            this.logger.log('Validating', form);\n\n            validate.then(success => {\n                this.logger.log('Validated (success = %s)', success, form);\n                if (callback) {\n                    callback(success);\n                    return;\n                }\n\n                const validationEvent = new CustomEvent('validation',\n                    {\n                        detail: { valid: success }\n                    });\n                form.dispatchEvent(validationEvent);\n\n                this.handleValidated(form, success, e);\n            }).catch(error => {\n                this.logger.log('Validation error', error);\n            }).finally(() => {\n                validating = false;\n            });\n        };\n\n        form.addEventListener('submit', cb);\n        form.addEventListener('reset', e => {\n            let uids = this.formInputs[formUID];\n\n            for (let uid of uids) {\n                let input = this.elementByUID[uid] as HTMLInputElement;\n                if (input.classList.contains(this.ValidationInputCssClassName)) {\n                    input.classList.remove(this.ValidationInputCssClassName);\n                }\n                if (input.classList.contains(this.ValidationInputValidCssClassName)) {\n                    input.classList.remove(this.ValidationInputValidCssClassName);\n                }\n\n                let spans = this.messageFor[input.name];\n                if (spans) {\n                    for (let i = 0; i < spans.length; i++) {\n                        spans[i].innerHTML = '';\n                    }\n                }\n\n                delete this.summary[uid];\n            }\n            this.renderSummary();\n        });\n        this.elementEvents[formUID] = cb;\n    }\n\n    /**\n     * Adds an input element to be managed and validated by the service.\n     * Triggers a debounced live validation when input value changes.\n     * @param input\n     */\n    addInput(input: HTMLInputElement) {\n        let uid = this.getElementUID(input);\n\n        let directives = this.parseDirectives(input.attributes);\n        let validate = this.createValidator(input, directives);\n\n        this.validators[uid] = validate;\n        if (input.form) {\n            this.trackFormInput(input.form, uid);\n        }\n\n        if (this.elementEvents[uid]) {\n            return;\n        }\n\n        let delay;\n        let cb = e => {\n            let validate = this.validators[uid];\n            clearTimeout(delay);\n            delay = setTimeout(validate, this.debounce);\n        };\n\n        let isDropdown = input.tagName.toLowerCase() === 'select';\n        let validateEvent = input.dataset.valEvent;\n        if (isDropdown) {\n            input.addEventListener('change', cb);\n        } else if (validateEvent) {\n            input.addEventListener(validateEvent, cb);\n        }\n        else {\n            input.addEventListener('input', cb);\n        }\n\n        this.elementEvents[uid] = cb;\n    }\n\n    /**\n     * Scans the entire document for input elements to be validated.\n     */\n    private scanInputs(root: HTMLElement) {\n        let inputs = Array.from(root.querySelectorAll<HTMLElement>('[data-val=\"true\"]'));\n\n        // querySelectorAll does not include the root element itself.\n        // we could use 'matches', but that's newer than querySelectorAll so we'll keep it simple and compatible.\n        if (root.getAttribute(\"data-val\") === \"true\") {\n            inputs.push(root);\n        }\n\n        for (let i = 0; i < inputs.length; i++) {\n            let input = inputs[i] as HTMLInputElement;\n            this.addInput(input);\n        }\n    }\n\n    /**\n     * Returns a <ul> element as a validation errors summary.\n     */\n    createSummaryDOM() {\n        if (!Object.keys(this.summary).length) {\n            return null;\n        }\n\n        let ul = document.createElement('ul');\n        for (let key in this.summary) {\n            let li = document.createElement('li');\n            li.innerHTML = this.summary[key];\n            ul.appendChild(li);\n        }\n        return ul;\n    }\n\n    /**\n     * Displays validation summary to ASP.NET Core MVC designated elements, when it actually gets updated.\n     */\n    private renderSummary() {\n        let summaryElements = document.querySelectorAll('[data-valmsg-summary=\"true\"]');\n        if (!summaryElements.length) {\n            return;\n        }\n\n        // Using JSON.stringify for quick and painless deep compare of simple KVP. You need to sort the keys first, tho...\n        let shadow = JSON.stringify(this.summary, Object.keys(this.summary).sort());\n        if (shadow === this.renderedSummaryJSON) {\n            return;\n        }\n\n        // Prevents wasteful re-rendering of summary list element with identical items!\n        this.renderedSummaryJSON = shadow;\n        let ul = this.createSummaryDOM();\n\n        for (let i = 0; i < summaryElements.length; i++) {\n            let e = summaryElements[i];\n            e.innerHTML = '';\n            if (ul) {\n                this.swapClasses(e,\n                    this.ValidationSummaryCssClassName,\n                    this.ValidationSummaryValidCssClassName)\n                e.appendChild(ul.cloneNode(true));\n            } else {\n                this.swapClasses(e,\n                    this.ValidationSummaryValidCssClassName,\n                    this.ValidationSummaryCssClassName)\n            }\n        }\n    }\n\n    /**\n     * Adds an error message to an input element, which also updates the validation message elements and validation summary elements.\n     * @param input\n     * @param message\n     */\n    addError(input: HTMLInputElement, message: string) {\n        let spans = this.messageFor[input.name];\n        if (spans) {\n            for (let i = 0; i < spans.length; i++) {\n                spans[i].innerHTML = message;\n                this.swapClasses(spans[i],\n                    this.ValidationMessageCssClassName,\n                    this.ValidationMessageValidCssClassName);\n            }\n        }\n\n        this.swapClasses(input,\n            this.ValidationInputCssClassName,\n            this.ValidationInputValidCssClassName);\n\n        // Adding an error to one input should also add it to others with the same name (i.e. for radio button and checkbox lists).\n        const inputs = input.form.querySelectorAll(`input[name=\"${input.name}\"]`);\n        for (let i = 0; i < inputs.length; i++) {\n            this.swapClasses(inputs[i],\n                this.ValidationInputCssClassName,\n                this.ValidationInputValidCssClassName);\n        }\n\n        let uid = this.getElementUID(input);\n        this.summary[uid] = message;\n        this.renderSummary();\n    }\n\n    /**\n     * Removes an error message from an input element, which also updates the validation message elements and validation summary elements.\n     * @param input\n     */\n    removeError(input: HTMLInputElement) {\n        let spans = this.messageFor[input.name];\n        if (spans) {\n            for (let i = 0; i < spans.length; i++) {\n                spans[i].innerHTML = '';\n                this.swapClasses(spans[i],\n                    this.ValidationMessageValidCssClassName,\n                    this.ValidationMessageCssClassName);\n            }\n        }\n\n        this.swapClasses(input,\n            this.ValidationInputValidCssClassName,\n            this.ValidationInputCssClassName);\n\n   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directive = directives[key];\n                    let provider = this.providers[key];\n\n                    if (!provider) {\n                        this.logger.log('aspnet-validation provider not implemented: %s', key);\n                        continue;\n                    }\n                    this.logger.log(\"Running %s validator on element\", key, input);\n\n                    let result = provider(input.value, input, directive.params);\n                    let valid = false;\n                    let error = directive.error;\n\n                    if (typeof result === 'boolean') {\n                        valid = result;\n                    } else if (typeof result === 'string') {\n                        valid = false;\n                        error = result;\n                    } else {\n                        let resolution = await result;\n                        if (typeof resolution === 'boolean') {\n                            valid = resolution;\n                 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\ No newline at end of file
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Ex. *.Password where * replaces whatever prefixes asp.net might add.\n */\nfunction getRelativeFormElement(element: HTMLInputElement, selector: string) {\n    // example elementName: Form.PasswordConfirm, Form.Email\n    // example selector (dafuq): *.Password, *.__RequestVerificationToken\n    // example result element name: Form.Password, __RequestVerificationToken\n\n    let elementName = element.name;\n    let realSelector = selector.substring(2); // Password, __RequestVerificationToken\n    let objectName = '';\n\n    let dotLocation = elementName.lastIndexOf('.');\n    if (dotLocation > -1) {\n        // Form\n        objectName = elementName.substring(0, dotLocation);\n\n        // Form.Password\n        let relativeElementName = objectName + '.' + realSelector;\n        let relativeElement = document.getElementsByName(relativeElementName)[0];\n        if (relativeElement) {\n            return relativeElement;\n        }\n    }\n\n    // __RequestVerificationToken\n    return element.form.querySelector(`[name=${realSelector}]`);\n}\n\n/**\n * Contains default implementations for ASP.NET Core MVC validation attributes.\n */\nexport class MvcValidationProviders {\n    /**\n     * Validates whether the input has a value.\n     */\n    required: ValidationProvider = (value, element, params) => {\n        return Boolean(value);\n    }\n\n    /**\n     * Validates whether the input value satisfies the length contstraint.\n     */\n    stringLength: ValidationProvider = (value, element, params) => {\n        if (!value) {\n            return true;\n        }\n\n        if (params.min) {\n            let min = parseInt(params.min);\n            if (value.length < min) {\n                return false;\n            }\n        }\n\n        if (params.max) {\n            let max = parseInt(params.max);\n            if (value.length > max) {\n                return false;\n            }\n        }\n\n        return true;\n    }\n\n    /**\n     * Validates whether the input value is equal to another input value.\n     */\n    compare: ValidationProvider = (value, element, params) => {\n        if (!params.other) {\n            return true;\n        }\n\n        let otherElement = getRelativeFormElement(element, params.other) as HTMLInputElement;\n        if (!otherElement) {\n            return true;\n        }\n\n        return (otherElement.value === value);\n    }\n\n    /**\n     * Validates whether the input value is a number within a given range.\n     */\n    range: ValidationProvider = (value, element, params) => {\n        if (!value) {\n            return true;\n        }\n\n        let val = parseFloat(value);\n        if (isNaN(val)) {\n            return false;\n        }\n\n        if (params.min) {\n            let min = parseFloat(params.min);\n            if (val < min) {\n                return false;\n            }\n        }\n\n        if (params.max) {\n            let max = parseFloat(params.max);\n            if (val > max) {\n                return false;\n            }\n        }\n\n        return true;\n    }\n\n    /**\n     * Validates whether the input value satisfies a regular expression pattern.\n     */\n    regex: ValidationProvider = (value, element, params) => {\n        if (!value || !params.pattern) {\n            return true;\n        }\n\n        let r = new RegExp(params.pattern);\n        return r.test(value);\n    }\n\n    /**\n     * Validates whether the input value is an email in accordance to RFC822 specification, with a top level domain.\n     */\n    email: ValidationProvider = (value, element, params) => {\n        if (!value) {\n            return true;\n        }\n\n        // RFC822 email address with .TLD validation\n        // (c) Richard Willis, Chris Ferdinandi, MIT Licensed\n        // https://gist.github.com/badsyntax/719800\n        // https://gist.github.com/cferdinandi/d04aad4ce064b8da3edf21e26f8944c4\n\n        let r = /^([^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+|\\x22([^\\x0d\\x22\\x5c\\x80-\\xff]|\\x5c[\\x00-\\x7f])*\\x22)(\\x2e([^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+|\\x22([^\\x0d\\x22\\x5c\\x80-\\xff]|\\x5c[\\x00-\\x7f])*\\x22))*\\x40([^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+|\\x5b([^\\x0d\\x5b-\\x5d\\x80-\\xff]|\\x5c[\\x00-\\x7f])*\\x5d)(\\x2e([^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+|\\x5b([^\\x0d\\x5b-\\x5d\\x80-\\xff]|\\x5c[\\x00-\\x7f])*\\x5d))*(\\.\\w{2,})+$/;\n        return r.test(value);\n    }\n\n    /**\n     * Validates whether the input value is a credit card number, with Luhn's Algorithm.\n     */\n    creditcard: ValidationProvider = (value, element, params) => {\n        if (!value) {\n            return true;\n        }\n\n        // (c) jquery-validation, MIT Licensed\n        // https://github.com/jquery-validation/jquery-validation/blob/master/src/additional/creditcard.js\n        // based on https://en.wikipedia.org/wiki/Luhn_algorithm\n\n        // Accept only spaces, digits and dashes\n        if (/[^0-9 \\-]+/.test(value)) {\n            return false;\n        }\n\n        var nCheck = 0,\n            nDigit = 0,\n            bEven = false,\n            n, cDigit;\n\n        value = value.replace(/\\D/g, \"\");\n\n        // Basing min and max length on https://developer.ean.com/general_info/Valid_Credit_Card_Types\n        if (value.length < 13 || value.length > 19) {\n            return false;\n        }\n\n        for (n = value.length - 1; n >= 0; n--) {\n            cDigit = value.charAt(n);\n            nDigit = parseInt(cDigit, 10);\n            if (bEven) {\n                if ((nDigit *= 2) > 9) {\n                    nDigit -= 9;\n                }\n            }\n\n            nCheck += nDigit;\n            bEven = !bEven;\n        }\n\n        return (nCheck % 10) === 0;\n    }\n\n    /**\n     * Validates whether the input value is a URL.\n     */\n    url: ValidationProvider = (value, element, params) => {\n        if (!value) {\n            return true;\n        }\n\n        let lowerCaseValue = value.toLowerCase();\n\n        // Match the logic in `UrlAttribute`\n        return lowerCaseValue.indexOf('http://') > -1\n            || lowerCaseValue.indexOf('https://') > -1\n            || lowerCaseValue.indexOf('ftp://') > -1;\n    }\n\n    /**\n     * Validates whether the input value is a phone number.\n     */\n    phone: ValidationProvider = (value, element, params) => {\n        if (!value) {\n            return true;\n        }\n\n        // Allows whitespace or dash as number separator because some people like to do that...\n        let consecutiveSeparator = /[\\+\\-\\s][\\-\\s]/g;\n        if (consecutiveSeparator.test(value)) {\n            return false;\n        }\n\n        let r = /^\\+?[0-9\\-\\s]+$/;\n        return r.test(value);\n    }\n\n    /**\n     * Asynchronously validates the input value to a JSON GET API endpoint.\n     */\n    remote: ValidationProvider = (value, element, params) => {\n        if (!value) {\n            return true;\n        }\n\n        // params.additionalfields: *.Email,*.Username\n        let fieldSelectors: string[] = (params.additionalfields as string).split(',');\n        let fields: StringKeyValuePair = {};\n\n        for (let fieldSelector of fieldSelectors) {\n            let fieldName = fieldSelector.substr(2);\n            let fieldElement = getRelativeFormElement(element, fieldSelector) as HTMLInputElement;\n\n            let hasValue = Boolean(fieldElement && fieldElement.value);\n            if (!hasValue) {\n                continue;\n            }\n\n            fields[fieldName] = fieldElement.value;\n        }\n\n        let url: string = params['url'];\n\n        let encodedParams: string[] = [];\n        for (let fieldName in fields) {\n            let encodedParam = encodeURIComponent(fieldName) + '=' + encodeURIComponent(fields[fieldName]);\n            encodedParams.push(encodedParam);\n        }\n        let payload = encodedParams.join('&');\n\n        return new Promise((ok, reject) => {\n            let request = new XMLHttpRequest();\n\n            if (params.type === 'Post') {\n                let postData = new FormData();\n                for (let fieldName in fields) {\n                    postData.append(fieldName, fields[fieldName]);\n                }\n                request.open('post', url);\n                request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');\n                request.send(payload);\n            } else {\n                request.open('get', url + '?' + payload);\n                request.send();\n            }\n\n            request.onload = e => {\n                if (request.status >= 200 && request.status < 300) {\n                    let data = JSON.parse(request.responseText);\n                    ok(data);\n                } else {\n                    reject({\n                        status: request.status,\n                        statusText: request.statusText,\n                        data: request.responseText\n                    });\n                }\n            };\n\n            request.onerror = e => {\n                reject({\n                    status: request.status,\n                    statusText: request.statusText,\n                    data: request.responseText\n                });\n            };\n        });\n    }\n}\n\n/**\n * Responsible for managing the DOM elements and running the validation providers.\n */\nexport class ValidationService {\n    /**\n     * A key-value collection of loaded validation plugins.\n     */\n    private providers: { [name: string]: ValidationProvider } = {};\n\n    /**\n     * A key-value collection of <span> elements for displaying validation messages for an input (by DOM ID).\n     */\n    private messageFor: { [id: string]: Element[] } = {};\n\n    /**\n     * A list of managed elements, each having a randomly assigned unique identifier (UID).\n     */\n    private elementUIDs: ElementUID[] = [];\n\n    /**\n     * A key-value collection of UID to Element for quick lookup.\n     */\n    private elementByUID: { [uid: string]: Element } = {};\n\n    /**\n     * A key-value collection of input UIDs for a <form> UID.\n     */\n    private formInputs: { [formUID: string]: string[] } = {};\n\n    /**\n     * A key-value map for input UID to its validator factory.\n     */\n    private validators: { [inputUID: string]: Validator } = {};\n\n    /**\n     * A key-value map for element UID to its trigger element (submit event for <form>, input event for <textarea> and <input>).\n     */\n    private elementEvents: { [id: string]: (e?: SubmitEvent, callback?: ValidatedCallback) => void } = {};\n\n    /**\n     * A key-value map of input UID to its validation error message.\n     */\n    private summary: StringKeyValuePair = {};\n\n    /**\n     * A serialized representation of the validation error message summary rendered to the user.\n     */\n    private renderedSummaryJSON: string;\n\n    /**\n     * In milliseconds, the rate of fire of the input validation.\n     */\n    debounce = 300;\n\n    /**\n     * Allow hidden fields validation\n     */\n    allowHiddenFields = false;\n\n    private logger: Logger;\n    observer?: MutationObserver;\n\n    constructor(logger?: Logger) {\n        this.logger = logger || nullLogger;\n    }\n\n    /**\n     * Registers a new validation plugin of the given name, if not registered yet.\n     * Registered plugin validates inputs with data-val-[name] attribute, used as error message.\n     * @param name\n     * @param callback\n     */\n    addProvider(name: string, callback: ValidationProvider) {\n        if (this.providers[name]) {\n            // First-Come-First-Serve validation plugin design.\n            // Allows developers to override the default MVC Providers by adding custom providers BEFORE bootstrap() is called!\n            return;\n        }\n        this.logger.log(\"Registered provider: %s\", name);\n        this.providers[name] = callback;\n    }\n\n    /**\n     * Registers the default providers for enabling ASP.NET Core MVC client-side validation.\n     */\n    private addMvcProviders() {\n        let mvc = new MvcValidationProviders();\n\n        // [Required]\n        this.addProvider('required', mvc.required);\n        // [StringLength], [MinLength], [MaxLength]\n        this.addProvider('length', mvc.stringLength);\n        this.addProvider('maxlength', mvc.stringLength);\n        this.addProvider('minlength', mvc.stringLength);\n        // [Compare]\n        this.addProvider('equalto', mvc.compare);\n        // [Range]\n        this.addProvider('range', mvc.range);\n        // [RegularExpression]\n        this.addProvider('regex', mvc.regex);\n        // [CreditCard]\n        this.addProvider('creditcard', mvc.creditcard);\n        // [EmailAddress]\n        this.addProvider('email', mvc.email);\n        // [Url]\n        this.addProvider('url', mvc.url);\n        // [Phone]\n        this.addProvider('phone', mvc.phone);\n        // [Remote]\n        this.addProvider('remote', mvc.remote);\n    }\n\n    /**\n     * Scans document for all validation message <span> generated by ASP.NET Core MVC, then tracks them.\n     */\n    private scanMessages(root: HTMLElement) {\n        /* If a validation span explicitly declares a form, we group the span with that form. */\n        let validationMessageElements = Array.from(root.querySelectorAll<HTMLElement>('span[form]'));\n        for (let span of validationMessageElements) {\n            let form = document.getElementById(span.getAttribute('form'));\n            if (form) {\n                this.pushValidationMessageSpan(form, span);\n            }\n        }\n\n        // Otherwise if a validation message span is inside a form, we group the span with the form it's inside.\n        let forms = Array.from(root.querySelectorAll<HTMLElement>('form'));\n        if (root.tagName === 'form') {\n            // querySelectorAll does not include the root element itself.\n            // we could use 'matches', but that's newer than querySelectorAll so we'll keep it simple and compatible.\n            forms.push(root);\n        }\n\n        for (let form of forms) {\n            let validationMessageElements = Array.from(form.querySelectorAll<HTMLElement>('[data-valmsg-for]'));\n\n            for (let span of validationMessageElements) {\n                this.pushValidationMessageSpan(form, span);\n            }\n        }\n    }\n\n    private pushValidationMessageSpan(form: HTMLElement, span: HTMLElement) {\n        let formId = this.getElementUID(form);\n        let name = `${formId}:${span.getAttribute('data-valmsg-for')}`;\n        let spans = this.messageFor[name] || (this.messageFor[name] = []);\n        if (spans.indexOf(span) < 0) {\n            spans.push(span);\n        }\n        else {\n            this.logger.log(\"Validation element for '%s' is already tracked\", name, span);\n        }\n    }\n\n    /**\n     * Given attribute map for an HTML input, returns the validation directives to be executed.\n     * @param attributes\n     */\n    parseDirectives(attributes: NamedNodeMap) {\n        let directives: ValidationDirective = {};\n        let validationAtributes: StringKeyValuePair = {};\n\n        let cut = 'data-val-'.length;\n        for (let i = 0; i < attributes.length; i++) {\n            let a = attributes[i];\n            if (a.name.indexOf('data-val-') === 0) {\n                let key = a.name.substr(cut);\n                validationAtributes[key] = a.value;\n            }\n        }\n\n        for (let key in validationAtributes) {\n            if (key.indexOf('-') === -1) {\n                let parameters = Object.keys(validationAtributes).filter(Q => {\n                    return (Q !== key) && (Q.indexOf(key) === 0);\n                });\n\n                let directive: ValidationDirectiveBindings = {\n                    error: validationAtributes[key],\n                    params: {}\n                };\n\n                let pcut = (key + '-').length;\n                for (let i = 0; i < parameters.length; i++) {\n                    let pvalue = validationAtributes[parameters[i]];\n                    let pkey = parameters[i].substr(pcut);\n\n                    directive.params[pkey] = pvalue;\n                }\n\n                directives[key] = directive;\n            }\n        }\n\n        return directives;\n    }\n\n    /**\n     *  Returns an RFC4122 version 4 compliant GUID.\n     */\n    private guid4() {\n        // (c) broofa, MIT Licensed\n        // https://stackoverflow.com/questions/105034/create-guid-uuid-in-javascript/2117523#2117523\n\n        return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {\n            var r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);\n            return v.toString(16);\n        });\n    }\n\n    /**\n     * Gets a UID for an DOM element.\n     * @param node\n     */\n    private getElementUID(node: Element) {\n        let x = this.elementUIDs.filter(e => {\n            return e.node === node;\n        })[0];\n\n        if (x) {\n            return x.uid;\n        }\n\n        let uid = this.guid4();\n        this.elementUIDs.push({\n            node: node,\n            uid: uid\n        });\n        this.elementByUID[uid] = node;\n        return uid;\n    }\n\n    /**\n     * Returns a Promise that returns validation result for each and every inputs within the form.\n     * @param formUID\n     */\n    private getFormValidationTask(formUID: string) {\n        let formInputUIDs = this.formInputs[formUID];\n        if (!formInputUIDs || formInputUIDs.length === 0) {\n            return Promise.resolve(true);\n        }\n\n        let formValidators: Validator[] = [];\n\n        for (let i = 0; i < formInputUIDs.length; i++) {\n            let inputUID = formInputUIDs[i];\n            formValidators.push(this.validators[inputUID]);\n        }\n\n        let tasks = formValidators.map(factory => factory());\n        return Promise.all(tasks).then(result => result.every(e => e));\n    }\n\n    // Retrieves the validation span for the input.\n    private getMessageFor(input: HTMLInputElement) {\n        let formId = this.getElementUID(input.form);\n        let name = `${formId}:${input.name}`;\n        return this.messageFor[name];\n    }\n\n    /**\n     * Fires off validation for elements within the provided form and then calls the callback\n     * @param form\n     * @param callback\n     */\n    validateForm = (form: HTMLFormElement, callback?: ValidatedCallback) => {\n        let formUID = this.getElementUID(form);\n        let formValidationEvent = this.elementEvents[formUID];\n        if (formValidationEvent) {\n            formValidationEvent(undefined, callback);\n        }\n    }\n\n    /**\n     * Called before validating form submit events.\n     * Default calls `preventDefault()` and `stopImmediatePropagation()`.\n     * @param submitEvent The `SubmitEvent`.\n     */\n    preValidate = (submitEvent: SubmitEvent) => {\n        submitEvent.preventDefault();\n        submitEvent.stopImmediatePropagation();\n    }\n\n    /**\n     * Handler for validated form submit events.\n     * Default calls `submitValidForm(form, submitEvent)` on success\n     * and `focusFirstInvalid(form)` on failure.\n     * @param form The form that has been validated.\n     * @param success The validation result.\n     * @param submitEvent The `SubmitEvent`.\n     */\n    handleValidated = (form: HTMLFormElement, success: boolean, submitEvent: SubmitEvent) => {\n        if (success) {\n            this.submitValidForm(form, submitEvent);\n        }\n        else {\n            this.focusFirstInvalid(form);\n        }\n    }\n\n    /**\n     * Dispatches a new `SubmitEvent` on the provided form,\n     * then calls `form.submit()` unless `submitEvent` is cancelable\n     * and `preventDefault()` was called by a handler that received the new event.\n     *\n     * This is equivalent to `form.requestSubmit()`, but more flexible.\n     * @param form The validated form to submit\n     * @param submitEvent The `SubmitEvent`.\n     */\n    submitValidForm = (form: HTMLFormElement, submitEvent: SubmitEvent) => {\n        const newEvent = new SubmitEvent('submit', submitEvent);\n        if (form.dispatchEvent(newEvent)) {\n            form.submit();\n        }\n    }\n\n    /**\n     * Focuses the first invalid element within the provided form\n     * @param form\n     */\n    focusFirstInvalid = (form: HTMLFormElement) => {\n        let formUID = this.getElementUID(form);\n        let formInputUIDs = this.formInputs[formUID];\n        let invalidFormInputUIDs = formInputUIDs.filter(uid => this.summary[uid]);\n\n        if (invalidFormInputUIDs.length > 0) {\n            var firstInvalid = this.elementByUID[invalidFormInputUIDs[0]] as HTMLElement;\n            if (firstInvalid) {\n                firstInvalid.focus();\n            }\n        }\n    }\n\n    /**\n     * Returns true if the provided form is valid, and then calls the callback. The form will be validated before checking, unless prevalidate is set to false\n     * @param form\n     * @param prevalidate\n     * @param callback\n     * @returns\n     */\n    isValid = (form: HTMLFormElement, prevalidate: boolean = true, callback?: ValidatedCallback) => {\n        if (prevalidate) {\n            this.validateForm(form, callback);\n        }\n        let formUID = this.getElementUID(form);\n        let formInputUIDs = this.formInputs[formUID];\n        let invalidFormInputUIDs = formInputUIDs.filter(uid => this.summary[uid]);\n        return invalidFormInputUIDs.length == 0;\n    }\n\n    /**\n     * Returns true if the provided field is valid, and then calls the callback. The form will be validated before checking, unless prevalidate is set to false\n     * @param field\n     * @param prevalidate\n     * @param callback\n     * @returns\n     */\n    isFieldValid = (field: HTMLElement, prevalidate: boolean = true, callback?: ValidatedCallback) => {\n\n        if (prevalidate) {\n            let form = field.closest(\"form\");\n            if (form != null) {\n                this.validateForm(form, callback);\n            }\n        }\n\n        let fieldUID = this.getElementUID(field);\n        return this.summary[fieldUID] != null;\n    }\n\n    /**\n     * Returns true if the event triggering the form submission indicates we should validate the form.\n     * @param e\n     */\n    private shouldValidate(e?: Event) {\n        // Skip client-side validation if the form has been submitted via a button that has the \"formnovalidate\" attribute.\n        return !(e && e['submitter'] && e['submitter']['formNoValidate']);\n    }\n\n    /**\n     * Tracks a <form> element as parent of an input UID. When the form is submitted, attempts to validate the said input asynchronously.\n     * @param form\n     * @param inputUID\n     */\n    private trackFormInput(form: HTMLFormElement, inputUID: string) {\n        let formUID = this.getElementUID(form);\n        if (!this.formInputs[formUID]) {\n            this.formInputs[formUID] = [];\n        }\n        let add = (this.formInputs[formUID].indexOf(inputUID) === -1);\n        if (add) {\n            this.formInputs[formUID].push(inputUID);\n        }\n        else {\n            this.logger.log(\"Form input for UID '%s' is already tracked\", inputUID);\n        }\n\n        if (this.elementEvents[formUID]) {\n            return;\n        }\n\n        let validating = false;\n        let cb = (e?: SubmitEvent, callback?: ValidatedCallback) => {\n            // Prevent recursion\n            if (validating) {\n                return;\n            }\n\n            if (!this.shouldValidate(e)) {\n                return;\n            }\n\n            let validate = this.getFormValidationTask(formUID);\n            if (!validate) {\n                return;\n            }\n\n            //`preValidate` typically prevents submit before validation\n            if (e) {\n                this.preValidate(e);\n            }\n\n            validating = true;\n            this.logger.log('Validating', form);\n\n            validate.then(success => {\n                this.logger.log('Validated (success = %s)', success, form);\n                if (callback) {\n                    callback(success);\n                    return;\n                }\n\n                const validationEvent = new CustomEvent('validation',\n                    {\n                        detail: { valid: success }\n                    });\n                form.dispatchEvent(validationEvent);\n\n                this.handleValidated(form, success, e);\n            }).catch(error => {\n                this.logger.log('Validation error', error);\n            }).finally(() => {\n                validating = false;\n            });\n        };\n\n        form.addEventListener('submit', cb);\n        form.addEventListener('reset', e => {\n            let uids = this.formInputs[formUID];\n\n            for (let uid of uids) {\n                let input = this.elementByUID[uid] as HTMLInputElement;\n                if (input.classList.contains(this.ValidationInputCssClassName)) {\n                    input.classList.remove(this.ValidationInputCssClassName);\n                }\n                if (input.classList.contains(this.ValidationInputValidCssClassName)) {\n                    input.classList.remove(this.ValidationInputValidCssClassName);\n                }\n\n                let spans = this.getMessageFor(input);\n                if (spans) {\n                    for (let i = 0; i < spans.length; i++) {\n                        spans[i].innerHTML = '';\n                    }\n                }\n\n                delete this.summary[uid];\n            }\n            this.renderSummary();\n        });\n        this.elementEvents[formUID] = cb;\n    }\n\n    /**\n     * Adds an input element to be managed and validated by the service.\n     * Triggers a debounced live validation when input value changes.\n     * @param input\n     */\n    addInput(input: HTMLInputElement) {\n        let uid = this.getElementUID(input);\n\n        let directives = this.parseDirectives(input.attributes);\n        this.validators[uid] = this.createValidator(input, directives);\n\n        if (input.form) {\n            this.trackFormInput(input.form, uid);\n        }\n\n        if (this.elementEvents[uid]) {\n            return;\n        }\n\n        let delay;\n        let cb = e => {\n            let validate = this.validators[uid];\n            clearTimeout(delay);\n            delay = setTimeout(validate, this.debounce);\n        };\n\n        let isDropdown = input.tagName.toLowerCase() === 'select';\n        let validateEvent = input.dataset.valEvent;\n        if (isDropdown) {\n            input.addEventListener('change', cb);\n        } else if (validateEvent) {\n            input.addEventListener(validateEvent, cb);\n        }\n        else {\n            input.addEventListener('input', cb);\n        }\n\n        this.elementEvents[uid] = cb;\n    }\n\n    /**\n     * Scans the entire document for input elements to be validated.\n     */\n    private scanInputs(root: HTMLElement) {\n        let inputs = Array.from(root.querySelectorAll<HTMLElement>('[data-val=\"true\"]'));\n\n        // querySelectorAll does not include the root element itself.\n        // we could use 'matches', but that's newer than querySelectorAll so we'll keep it simple and compatible.\n        if (root.getAttribute(\"data-val\") === \"true\") {\n            inputs.push(root);\n        }\n\n        for (let i = 0; i < inputs.length; i++) {\n            let input = inputs[i] as HTMLInputElement;\n            this.addInput(input);\n        }\n    }\n\n    /**\n     * Returns a <ul> element as a validation errors summary.\n     */\n    createSummaryDOM() {\n        if (!Object.keys(this.summary).length) {\n            return null;\n        }\n\n        let ul = document.createElement('ul');\n        for (let key in this.summary) {\n            let li = document.createElement('li');\n            li.innerHTML = this.summary[key];\n            ul.appendChild(li);\n        }\n        return ul;\n    }\n\n    /**\n     * Displays validation summary to ASP.NET Core MVC designated elements, when it actually gets updated.\n     */\n    private renderSummary() {\n        let summaryElements = document.querySelectorAll('[data-valmsg-summary=\"true\"]');\n        if (!summaryElements.length) {\n            return;\n        }\n\n        // Using JSON.stringify for quick and painless deep compare of simple KVP. You need to sort the keys first, tho...\n        let shadow = JSON.stringify(this.summary, Object.keys(this.summary).sort());\n        if (shadow === this.renderedSummaryJSON) {\n            return;\n        }\n\n        // Prevents wasteful re-rendering of summary list element with identical items!\n        this.renderedSummaryJSON = shadow;\n        let ul = this.createSummaryDOM();\n\n        for (let i = 0; i < summaryElements.length; i++) {\n            let e = summaryElements[i];\n            e.innerHTML = '';\n            if (ul) {\n                this.swapClasses(e,\n                    this.ValidationSummaryCssClassName,\n                    this.ValidationSummaryValidCssClassName)\n                e.appendChild(ul.cloneNode(true));\n            } else {\n                this.swapClasses(e,\n                    this.ValidationSummaryValidCssClassName,\n                    this.ValidationSummaryCssClassName)\n            }\n        }\n    }\n\n    /**\n     * Adds an error message to an input element, which also updates the validation message elements and validation summary elements.\n     * @param input\n     * @param message\n     */\n    addError(input: HTMLInputElement, message: string) {\n        let spans = this.getMessageFor(input);\n        if (spans) {\n            for (let i = 0; i < spans.length; i++) {\n                const span = spans[i];\n                spans[i].innerHTML = message;\n                this.swapClasses(spans[i],\n                    this.ValidationMessageCssClassName,\n                    this.ValidationMessageValidCssClassName);\n            }\n        }\n\n        this.swapClasses(input,\n            this.ValidationInputCssClassName,\n            this.ValidationInputValidCssClassName);\n\n        // Adding an error to one input should also add it to others with the same name (i.e. for radio button and checkbox lists).\n        const inputs = input.form.querySelectorAll(`input[name=\"${input.name}\"]`);\n        for (let i = 0; i < inputs.length; i++) {\n            this.swapClasses(inputs[i],\n                this.ValidationInputCssClassName,\n                this.ValidationInputValidCssClassName);\n        }\n\n        let uid = this.getElementUID(input);\n        this.summary[uid] = message;\n        this.renderSummary();\n    }\n\n    /**\n     * Removes an error message from an input element, which also updates the validation message elements and validation summary elements.\n     * @param input\n     */\n    removeError(input: HTMLInputElement) {\n        let spans = this.getMessageFor(input);\n        if (spans) {\n            for (let i = 0; i < spans.length; i++) {\n                spans[i].innerHTML = '';\n                this.swapClasses(spans[i],\n                    this.ValidationMessageValidCssClassName,\n                    this.ValidationMessageCssClassName);\n            }\n        }\n\n        this.swapClasses(input,\n            this.ValidationInputValidCssClassName,\n            this.ValidationInputCssClassName);\n\n        // Removing an error from one input should also remove it from others with the same name (i.e. for radio button and checkbox lists).\n        const inputs = input.form.querySelectorAll(`input[name=\"${input.name}\"]`);\n        for (let i = 0; i < inputs.length; i++) {\n            this.swapClasses(inputs[i],\n                this.ValidationInputValidCssClassName,\n                this.ValidationInputCssClassName);\n        }\n\n        let uid = this.getElementUID(input);\n        delete this.summary[uid];\n        this.renderSummary();\n    }\n\n    /**\n     * Returns a validation Promise factory for an input element, using given validation directives.\n     * @param input\n     * @param directives\n     */\n    createValidator(input: HTMLInputElement, directives: ValidationDirective) {\n        return async () => {\n\n            // only validate visible fields\n            if (!this.isHidden(input)) {\n                for (let key in directives) {\n                    let directive = directives[key];\n                    let provider = this.providers[key];\n\n                    if (!provider) {\n                        this.logger.log('aspnet-validation provider not implemented: %s', key);\n                        continue;\n                    }\n                    this.logger.log(\"Running %s validator on element\", key, input);\n\n                    let result = provider(input.value, input, directive.params);\n                    let valid = false;\n                    let error = directive.error;\n\n                    if (typeof result === 'boolean') {\n                        valid = result;\n                    } else if (typeof result === 'string') {\n                        valid = false;\n                        error = result;\n                    } else {\n                        let resolution = await result;\n                        if (typeof resolution === 'boolean') {\n                            valid = resolution;\n                        } else {\n                            valid = false;\n                            error = resolution;\n                        }\n                    }\n\n                    if (!valid) {\n                        this.addError(input, error);\n                        return false;\n                    }\n                }\n            }\n\n            this.removeError(input);\n            return true;\n\n        };\n    }\n\n    /**\n     * Checks if the provided input is hidden from the browser\n     * @param input\n     * @returns\n     */\n    private isHidden(input: HTMLElement) {\n        return !(this.allowHiddenFields || input.offsetWidth || input.offsetHeight || input.getClientRects().length);\n    }\n\n    /**\n     * Adds addClass and removes removeClass\n     * @param element Element to modify\n     * @param addClass Class to add\n     * @param removeClass Class to remove\n     */\n    private swapClasses(element: Element, addClass: string, removeClass: string) {\n        if (!element.classList.contains(addClass)) {\n            element.classList.add(addClass);\n        }\n        if (element.classList.contains(removeClass)) {\n            element.classList.remove(removeClass);\n        }\n    }\n\n    /**\n     * Load default validation providers and scans the entire document when ready.\n     * @param options.watch If set to true, a MutationObserver will be used to continuously watch for new elements that provide validation directives.\n     */\n    bootstrap(options?: { watch?: boolean, root?: HTMLElement }) {\n        options = options || {};\n\n        this.addMvcProviders();\n        let document = window.document;\n        const root = options.root || document.body;\n        const init = () => {\n            this.scan(root);\n\n            // Watch for further mutations after initial scan\n            if (options.watch) {\n                this.watch(root);\n            }\n        }\n\n        // If the document is done loading, scan it now.\n        if (document.readyState === 'complete' || document.readyState === 'interactive') {\n            init();\n        }\n        else {\n            // Otherwise wait until the document is done loading.\n            document.addEventListener('DOMContentLoaded', init);\n        }\n    }\n\n    /**\n     * Scans the provided root element for any validation directives and attaches behavior to them.\n     */\n    scan(root: HTMLElement) {\n        this.logger.log('Scanning', root);\n        this.scanMessages(root);\n        this.scanInputs(root);\n    }\n\n    /**\n     * Watches the provided root element for mutations, and scans for new validation directives to attach behavior.\n     * @param root The root element to use, defaults to the document.documentElement.\n     */\n    watch(root: HTMLElement) {\n        this.observer = new MutationObserver(mutations => {\n            mutations.forEach(mutation => {\n                this.observed(mutation);\n            });\n        });\n        this.observer.observe(root, {\n            attributes: true,\n            childList: true,\n            subtree: true\n        });\n        this.logger.log(\"Watching for mutations\");\n    }\n\n    private observed(mutation: MutationRecord) {\n        if (mutation.type === 'childList') {\n            for (let i = 0; i < mutation.addedNodes.length; i++) {\n                let node = mutation.addedNodes[i];\n                this.logger.log('Added node', node);\n                if (node instanceof HTMLElement) {\n                    this.scan(node);\n                }\n            }\n        } else if (mutation.type === 'attributes') {\n            if (mutation.target instanceof HTMLElement) {\n                const oldValue = mutation.oldValue ?? '';\n                const newValue = mutation.target.attributes[mutation.attributeName]?.value ?? '';\n                this.logger.log(\"Attribute '%s' changed from '%s' to '%s'\",\n                    mutation.attributeName,\n                    oldValue,\n                    newValue,\n                    mutation.target);\n                if (oldValue !== newValue) {\n                    this.scan(mutation.target);\n                }\n            }\n        }\n    }\n\n    /**\n     * Override CSS class name for input validation error. Default: 'input-validation-error'\n     */\n    ValidationInputCssClassName = \"input-validation-error\";\n\n    /**\n     * Override CSS class name for valid input validation. Default: 'input-validation-valid'\n     */\n    ValidationInputValidCssClassName = \"input-validation-valid\";\n\n    /**\n     * Override CSS class name for field validation error. Default: 'field-validation-error'\n     */\n    ValidationMessageCssClassName = \"field-validation-error\";\n\n    /**\n     * Override CSS class name for valid field validation. Default: 'field-validation-valid'\n     */\n    ValidationMessageValidCssClassName = \"field-validation-valid\";\n\n    /**\n     * Override CSS class name for validation summary error. Default: 'validation-summary-errors'\n     */\n    ValidationSummaryCssClassName = \"validation-summary-errors\";\n\n    /**\n     * Override CSS class name for valid validation summary. Default: 'field-validation-valid'\n     */\n    ValidationSummaryValidCssClassName = \"validation-summary-valid\";\n}\n"],"sourceRoot":""}
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index beb0b6b..fe2bdf7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "aspnet-client-validation",
-  "version": "0.8.6",
+  "version": "0.8.7",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "aspnet-client-validation",
-      "version": "0.8.6",
+      "version": "0.8.7",
       "license": "MIT",
       "devDependencies": {
         "ts-loader": "^5.3.1",
diff --git a/package.json b/package.json
index aaa9dd2..a89dbd3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "aspnet-client-validation",
-  "version": "0.8.6",
+  "version": "0.8.7",
   "description": "Enables ASP.NET MVC client-side validation, without jQuery!",
   "main": "dist/aspnet-validation.js",
   "style": "dist/aspnet-validation.css",
diff --git a/src/index.ts b/src/index.ts
index d9dcb15..66181fa 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -63,20 +63,22 @@ type Validator = () => Promise<boolean>;
 
 /**
  * Resolves and returns the element referred by original element using ASP.NET selector logic.
- * @param elementName
+ * @param element - The input to validate
+ * @param selector - Used to find the field. Ex. *.Password where * replaces whatever prefixes asp.net might add.
  */
-function getRelativeFormElement(elementName: string, selector: string) {
+function getRelativeFormElement(element: HTMLInputElement, selector: string) {
     // example elementName: Form.PasswordConfirm, Form.Email
     // example selector (dafuq): *.Password, *.__RequestVerificationToken
     // example result element name: Form.Password, __RequestVerificationToken
 
-    let realSelector = selector.substr(2); // Password, __RequestVerificationToken
+    let elementName = element.name;
+    let realSelector = selector.substring(2); // Password, __RequestVerificationToken
     let objectName = '';
 
     let dotLocation = elementName.lastIndexOf('.');
     if (dotLocation > -1) {
         // Form
-        objectName = elementName.substr(0, dotLocation);
+        objectName = elementName.substring(0, dotLocation);
 
         // Form.Password
         let relativeElementName = objectName + '.' + realSelector;
@@ -87,7 +89,7 @@ function getRelativeFormElement(elementName: string, selector: string) {
     }
 
     // __RequestVerificationToken
-    return document.getElementsByName(realSelector)[0];
+    return element.form.querySelector(`[name=${realSelector}]`);
 }
 
 /**
@@ -134,7 +136,7 @@ export class MvcValidationProviders {
             return true;
         }
 
-        let otherElement = getRelativeFormElement(element.name, params.other) as HTMLInputElement;
+        let otherElement = getRelativeFormElement(element, params.other) as HTMLInputElement;
         if (!otherElement) {
             return true;
         }
@@ -294,7 +296,7 @@ export class MvcValidationProviders {
 
         for (let fieldSelector of fieldSelectors) {
             let fieldName = fieldSelector.substr(2);
-            let fieldElement = getRelativeFormElement(element.name, fieldSelector) as HTMLInputElement;
+            let fieldElement = getRelativeFormElement(element, fieldSelector) as HTMLInputElement;
 
             let hasValue = Boolean(fieldElement && fieldElement.value);
             if (!hasValue) {
@@ -354,7 +356,7 @@ export class MvcValidationProviders {
 }
 
 /**
- * Responsibles for managing the DOM elements and running the validation providers.
+ * Responsible for managing the DOM elements and running the validation providers.
  */
 export class ValidationService {
     /**
@@ -469,28 +471,44 @@ export class ValidationService {
      * Scans document for all validation message <span> generated by ASP.NET Core MVC, then tracks them.
      */
     private scanMessages(root: HTMLElement) {
-        let validationMessageElements = Array.from(root.querySelectorAll<HTMLElement>('[data-valmsg-for]'));
+        /* If a validation span explicitly declares a form, we group the span with that form. */
+        let validationMessageElements = Array.from(root.querySelectorAll<HTMLElement>('span[form]'));
+        for (let span of validationMessageElements) {
+            let form = document.getElementById(span.getAttribute('form'));
+            if (form) {
+                this.pushValidationMessageSpan(form, span);
+            }
+        }
 
-        // querySelectorAll does not include the root element itself.
-        // we could use 'matches', but that's newer than querySelectorAll so we'll keep it simple and compatible.
-        if (root.hasAttribute("data-valmsg-for")) {
-            validationMessageElements.push(root);
+        // Otherwise if a validation message span is inside a form, we group the span with the form it's inside.
+        let forms = Array.from(root.querySelectorAll<HTMLElement>('form'));
+        if (root.tagName === 'form') {
+            // querySelectorAll does not include the root element itself.
+            // we could use 'matches', but that's newer than querySelectorAll so we'll keep it simple and compatible.
+            forms.push(root);
         }
 
-        for (let i = 0; i < validationMessageElements.length; i++) {
-            let e = validationMessageElements[i];
-            let name = e.getAttribute('data-valmsg-for');
+        for (let form of forms) {
+            let validationMessageElements = Array.from(form.querySelectorAll<HTMLElement>('[data-valmsg-for]'));
 
-            let spans = this.messageFor[name] || (this.messageFor[name] = []);
-            if (spans.indexOf(e) < 0) {
-                spans.push(e);
-            }
-            else {
-                this.logger.log("Validation element for '%s' is already tracked", name, e);
+            for (let span of validationMessageElements) {
+                this.pushValidationMessageSpan(form, span);
             }
         }
     }
 
+    private pushValidationMessageSpan(form: HTMLElement, span: HTMLElement) {
+        let formId = this.getElementUID(form);
+        let name = `${formId}:${span.getAttribute('data-valmsg-for')}`;
+        let spans = this.messageFor[name] || (this.messageFor[name] = []);
+        if (spans.indexOf(span) < 0) {
+            spans.push(span);
+        }
+        else {
+            this.logger.log("Validation element for '%s' is already tracked", name, span);
+        }
+    }
+
     /**
      * Given attribute map for an HTML input, returns the validation directives to be executed.
      * @param attributes
@@ -590,6 +608,13 @@ export class ValidationService {
         return Promise.all(tasks).then(result => result.every(e => e));
     }
 
+    // Retrieves the validation span for the input.
+    private getMessageFor(input: HTMLInputElement) {
+        let formId = this.getElementUID(input.form);
+        let name = `${formId}:${input.name}`;
+        return this.messageFor[name];
+    }
+
     /**
      * Fires off validation for elements within the provided form and then calls the callback
      * @param form
@@ -682,7 +707,7 @@ export class ValidationService {
 
     /**
      * Returns true if the provided field is valid, and then calls the callback. The form will be validated before checking, unless prevalidate is set to false
-     * @param form
+     * @param field
      * @param prevalidate
      * @param callback
      * @returns
@@ -789,7 +814,7 @@ export class ValidationService {
                     input.classList.remove(this.ValidationInputValidCssClassName);
                 }
 
-                let spans = this.messageFor[input.name];
+                let spans = this.getMessageFor(input);
                 if (spans) {
                     for (let i = 0; i < spans.length; i++) {
                         spans[i].innerHTML = '';
@@ -812,9 +837,8 @@ export class ValidationService {
         let uid = this.getElementUID(input);
 
         let directives = this.parseDirectives(input.attributes);
-        let validate = this.createValidator(input, directives);
+        this.validators[uid] = this.createValidator(input, directives);
 
-        this.validators[uid] = validate;
         if (input.form) {
             this.trackFormInput(input.form, uid);
         }
@@ -920,9 +944,10 @@ export class ValidationService {
      * @param message
      */
     addError(input: HTMLInputElement, message: string) {
-        let spans = this.messageFor[input.name];
+        let spans = this.getMessageFor(input);
         if (spans) {
             for (let i = 0; i < spans.length; i++) {
+                const span = spans[i];
                 spans[i].innerHTML = message;
                 this.swapClasses(spans[i],
                     this.ValidationMessageCssClassName,
@@ -952,7 +977,7 @@ export class ValidationService {
      * @param input
      */
     removeError(input: HTMLInputElement) {
-        let spans = this.messageFor[input.name];
+        let spans = this.getMessageFor(input);
         if (spans) {
             for (let i = 0; i < spans.length; i++) {
                 spans[i].innerHTML = '';
diff --git a/types/index.d.ts b/types/index.d.ts
index ef3b49a..e49b35d 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -83,7 +83,7 @@ export declare class MvcValidationProviders {
     remote: ValidationProvider;
 }
 /**
- * Responsibles for managing the DOM elements and running the validation providers.
+ * Responsible for managing the DOM elements and running the validation providers.
  */
 export declare class ValidationService {
     /**
@@ -148,6 +148,7 @@ export declare class ValidationService {
      * Scans document for all validation message <span> generated by ASP.NET Core MVC, then tracks them.
      */
     private scanMessages;
+    private pushValidationMessageSpan;
     /**
      * Given attribute map for an HTML input, returns the validation directives to be executed.
      * @param attributes
@@ -167,6 +168,7 @@ export declare class ValidationService {
      * @param formUID
      */
     private getFormValidationTask;
+    private getMessageFor;
     /**
      * Fires off validation for elements within the provided form and then calls the callback
      * @param form
@@ -213,7 +215,7 @@ export declare class ValidationService {
     isValid: (form: HTMLFormElement, prevalidate?: boolean, callback?: ValidatedCallback) => boolean;
     /**
      * Returns true if the provided field is valid, and then calls the callback. The form will be validated before checking, unless prevalidate is set to false
-     * @param form
+     * @param field
      * @param prevalidate
      * @param callback
      * @returns