For future googlers: Working with Vue.js

[ellemaker]

$("#modal").iziModal({ title:'Create Directory', appendTo: false, appendToOverlay: false, transitionIn: 'fadeInDown' });

iziModal.js
comment this line..
this.$element.html('<div class="'+PLUGIN_NAME+'-wrap"><div class="'+PLUGIN_NAME+'-content">' + this.content + '</div></div>');

in your html

<div id="modal">
<div class="iziModal-wrap">
<div class="iziModal-content">
<h2>portal</h2>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Blanditiis, vel, unde? Commodi dolorum cupiditate quos rerum quod voluptas ut esse ratione necessitatibus ad libero, laboriosam rem optio voluptatum, alias dolore.</p>
<p>{{ control_test }}</p>
<input type="text" v-model="control_test">
</div>
</div>
</div>