feat(TextEllipsis): add dots prop (youzan#11745)

* feat(TextEllipsis): add dots prop

* chore: update snap

Author: chenjiahan

packages/vant/src/text-ellipsis/README.md

@@ -91,6 +91,7 @@ export default {
 | content       | The text displayed       | _string_           | -       |
 | expand-text   | Expand operation text    | _string_           | -       |
 | collapse-text | Collapse operation text  | _string_           | -       |
+| dots          | Text content of ellipsis | _string_           | `'...'` |
 
 ### Events
 

packages/vant/src/text-ellipsis/README.zh-CN.md

@@ -80,12 +80,13 @@ export default {
 
 ### Props
 
-| 参数          | 说明           | 类型               | 默认值 |
-| ------------- | -------------- | ------------------ | ------ |
-| rows          | 展示的行数     | _number \| string_ | `1`    |
-| content       | 需要展示的文本 | _string_           | -      |
-| expand-text   | 展开操作的文案 | _string_           | -      |
-| collapse-text | 收起操作的文案 | _string_           | -      |
+| 参数          | 说明             | 类型               | 默认值  |
+| ------------- | ---------------- | ------------------ | ------- |
+| rows          | 展示的行数       | _number \| string_ | `1`     |
+| content       | 需要展示的文本   | _string_           | -       |
+| expand-text   | 展开操作的文案   | _string_           | -       |
+| collapse-text | 收起操作的文案   | _string_           | -       |
+| dots          | 省略号的文本内容 | _string_           | `'...'` |
 
 ### Events
 

packages/vant/src/text-ellipsis/TextEllipsis.tsx

@@ -16,6 +16,7 @@ const [name, bem] = createNamespace('text-ellipsis');
 
 export const textEllipsisProps = {
   rows: makeNumericProp(1),
+  dots: makeStringProp('...'),
   content: makeStringProp(''),
   expandText: makeStringProp(''),
   collapseText: makeStringProp(''),
@@ -69,23 +70,23 @@ export default defineComponent({
         container: HTMLDivElement,
         maxHeight: number
       ) => {
-        const { content, expandText } = props;
-        const dot = '...';
+        const { dots, content, expandText } = props;
+
         let left = 0;
         let right = content.length;
         let res = -1;
 
         while (left <= right) {
           const mid = Math.floor((left + right) / 2);
-          container.innerText = content.slice(0, mid) + dot + expandText;
+          container.innerText = content.slice(0, mid) + dots + expandText;
           if (container.offsetHeight <= maxHeight) {
             left = mid + 1;
             res = mid;
           } else {
             right = mid - 1;
           }
         }
-        return content.slice(0, res) + dot;
+        return content.slice(0, res) + dots;
       };
 
       const container = cloneContainer();