vuejsBasic/test.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}}
  <temp @item-click="getFromChild"></temp>
</div>
<template id="temp">
  <div>
    <h2>{{childmessage}}</h2>
    <button @click="btnClick(childmessage)">{{childmessage}}</button>
  </div>
</template>
<body>
<script src="vue.js"></script>
<script>
  const temp = {
    template: '#temp',
    data() {
      return {
        childmessage: 'messageInChildComponent'
      }
    },
    methods: {
      btnClick(item) {
        this.$emit('item-click', item)
      }
    }
  }
  const app = new Vue({
    el: '#app', // 用于要挂载的元素
    data: {
      message: 'msg'
    },
    computed:{

    },
    methods: {
      getFromChild(item) {
        console.log('what ' + item)
        return item
      },
    },
    components: {
      temp
    }

  })

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