vue_计数器的实现

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源码：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>组件的实例</title>
</head>
<body>

<div id="app">
  <cpn></cpn>
  <cpn></cpn>
  <cpn></cpn>
</div>

<template id="cpn">
  <div>
    <h2>当前计数为：{{counter}}</h2>
    <button @click="sub" :disabled="this.counter<=0">-</button>
    <button @click="add">+</button>
  </div>
</template>

<script src="../js/vue.js"></script>

<script>
<!--  1、组件的注册-->
  Vue.component('cpn',{
    template:'#cpn',
    data(){
      return{
        // 每一个组件都应该有自己独特的空间
        counter:0
      }
    },
    methods:{
      add(){
        this.counter++
      },
      sub(){
        this.counter--
      }
    }
  })
  const app = new Vue({
    el: '#app',
  })
</script>

</body>
</html>
posted @ 2021-10-16 15:47  博客zhu虎康  阅读(82)  评论(0)  编辑  收藏  举报