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                            [TOC]

## 概述

root-portal 使整個子樹從頁面中脫離出來，類似于在 CSS 中使用 fixed position 的效果。主要用于制作彈窗、彈出層等。


代碼
```
<template>
  <view class="container">
    <!-- 普通內容 -->
    <view class="content">頁面內容</view>
    
    <!-- 使用 RootPortal 將內容渲染到根節點 -->
    <root-portal>
      <view class="modal" v-if="showModal">
        <view class="modal-content">
          這個彈窗會被渲染到頁面根節點
        </view>
      </view>
    </root-portal>
  </view>
</template>
```
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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