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Vue中的列表渲染和条件指令渲染实例
          
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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <meta name="viewport"
  6.           content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  7.     <meta http-equiv="X-UA-Compatible" content="ie=edge">
  8.     <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
  9.     <title>1121作业</title>
  10. <!--  实例演示列表渲染与条件渲染指令-->
  11. </head>
  12. <body>
  14. <div id="app">
  15.     <h3 :style="{color:red}">列表渲染:v-for</h3>
  16.     <ul>
  17.         <li v-for="(item,key) of list" :key="key">{{item}}</li>
  18.     </ul>
  19. </div>
  20. <hr>
  21. <div id="object">
  22.     <h3 v-bind:style="{color:bl}" >条件渲染:v-if</h3>
  23.     <p v-if="id === 1">{{arr[0]}}</p>
  24.     <p v-else-if="id ===2">{{arr[1]}}</p>
  25.     <p v-else-if="id ===3">{{arr[2]}}</p>
  26.     <p v-else-if="id ===4">{{arr[3]}}</p>
  27.     <p v-else>{{arr[4]}}</p>
  28. </div>
  29. <script>
  30.     // 列表渲染:v-for
  31.     // 应用实例
  32.     const app = Vue.createApp({
  33.         data(){
  34.             return{
  35.                 list:[1,2,3,4,5],
  36.                 red:'red',
  37.             }
  38.         }
  39.     })
  40.     // 根组件实例：绑定
  41.     app.mount('#app')
  43.     // 条件渲染:v-if
  44.     const object = Vue.createApp({
  45.         data(){
  46.             return{
  47.                 bl:'blue',
  48.                 arr:['1==A','2==B','3==C','4==D','非法数据！'],
  49.                 id:1
  50.             }
  51.         }
  52.     })
  53.     const vm = object.mount("#object")
  54.     // 动态修改
  55.     vm.id = 1       // 1==A
  56.     vm.id = 2       // 2==B
  57.     vm.id = 3       // 3==C
  58.     vm.id = 800   // 非法数据！
  59. </script>
  61. </body>
  62. </html>

运行结果

Correcting teacher：PHPzPHPz

Correction status：qualified

Teacher's comments：
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