lovecoding
/
VIP22


			
				
					
						
						
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							<!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>Document</title>
</head>
<body>
  <div id="app">
    <button @click="fn()">+1</button>
    <button @click=des()>销毁</button>
    <h2 id="myCount">{{count}}</h2>
  </div>
  <script src="vue.js"></script>
  <script>
    new Vue({
      el:"#app",
      data:{
        count: 1
      },
      methods:{
        fn(){
          this.count++
        },
        des(){
          this.$destroy()
        }
      },
      //组件实例刚刚创建的时候  属性计算之前  
      beforeCreate(){
        console.log('beforeCreate',this.$data,this.$el)
      },
      //组件实例刚刚创建完成  属性绑定上了 但是 dom未生成 所以el不存在
      created(){
        console.log('created',this.$data,this.$el)
      },
      //挂载之前
      beforeMount(){
        console.log('beforeMount',this.$data,this.$el)
      },
      //挂载之后
      mounted(){
        console.log('mounted',this.$data,this.$el)
      },
      beforeUpdate(){
        console.log('beforeUpdate',document.getElementById('myCount').innerHTML)
      },
      updated(){
        console.log('updated',document.getElementById('myCount').innerHTML)
      },
      beforeDestroy(){
        console.log('beforeDestroy')
      },
      destroyed(){
        console.log('destroyed')
      }
    })
  </script>
</body>
</html>