vuejsBasic/37practice.html at master · outwittester/vuejsBasic · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
</head>
<div id="app">
  {{message}}
  <cpn :number1="num1" :number2="num2"></cpn>
</div>
<template id="cpn">
  <div>
    <!--    官方不推荐使用v-model绑定子组件的数据 用emit check 38-->
    <input type="text" v-model="dnumber1">
    <h2>props:{{number1}}</h2>
    <h2>data number1:{{dnumber1}}</h2>
    <input type="text" v-model="dnumber2">
    <h2>props:{{number2}}</h2>
    <h2>data number2:{{dnumber2}}</h2>
  </div>
</template>
<body>

<script src="vue.js"></script>
<script>
  //渐进开发
  //创建了一个vue对象 参数是一个对象类型 {} 包含 如el,data 属性
  //var let const  声明式编程  (数据与界面分离)
  const app = new Vue({
    el: '#app', // 用于要挂载的元素
    data: {
      message: 'first message',
      num1: 1,
      num2: 0
    },
    components: {
      cpn: {
        template: `#cpn`,
        props: {
          number1: Number,
          number2: Number
        },
        data() {
          return {
            dnumber1: this.number1,
            dnumber2: this.number2
          }
        }
      }
    }
  })

</script>
</body>
</html>