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【Vue3 从入门到实战 进阶式掌握完整知识体系】026-Vue中的高级语法:Teleport传送门

3、Teleport传送门

给整个屏幕添加蒙层

水平垂直居中的 CSS 样式是非常值得借鉴的!

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>hello vue</title>
  <!-- 引入Vue库 -->
  <script src="https://unpkg.com/vue@next"></script>
  <!-- 样式 -->
  <style>
    .area{
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%,-50%);
      width: 200px;
      height: 300px;
      background-color: burlywood;
    }
    /* 写一个蒙层 */
    .mask{
      position: absolute;
      left: 0;
      right: 0;
      top: 0;
      bottom: 0;
      background-color: black;
      opacity: .5;
    }
  </style>
</head>

<body>
  <div id="root"></div>
</body>

<script>

  const app = Vue.createApp({
    data(){
      return {
        show: false
      }
    },
    methods:{
      handleClick(){
        this.show = !this.show;
      }
    },
    template: `
        <div class="area">
          <button @click="handleClick">点我</button>
          <div class="mask" v-show="show"></div>
        </div>
    `
  });

  const vm = app.mount('#root');
</script>

</html>
复制代码

运行结果

image-20210614115500756.png

使用teleport传送门

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>hello vue</title>
  <!-- 引入Vue库 -->
  <script src="https://unpkg.com/vue@next"></script>
  <!-- 样式 -->
  <style>
    .area{
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%,-50%);
      width: 200px;
      height: 300px;
      background-color: burlywood;
    }
    /* 写一个蒙层 */
    .mask{
      position: absolute;
      left: 0;
      right: 0;
      top: 0;
      bottom: 0;
      background-color: black;
      opacity: .5;
    }
  </style>
</head>

<body>
  <div id="root"></div>
</body>

<script>

  const app = Vue.createApp({
    data(){
      return {
        show: false
      }
    },
    methods:{
      handleClick(){
        this.show = !this.show;
      }
    },
    // body标签使用to="body"
    // hello id使用to="#hello"
    template: `
        <div class="area">
          <button @click="handleClick">点我</button>
          <teleport to="body">
            <div class="mask" v-show="show"></div>
          </teleport>
        </div>
    `
  });

  const vm = app.mount('#root');
</script>

</html>
复制代码

运行结果

image-20210614120028583.png

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