vue_实例_组件的生命周期

 

 重绘重排 中重复出现的是

mounted(){...}

beforeUpdate(){...}

uptated(){...}

其他钩子函数只会出现一次

  • <!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>viewModel 的生命周期</title>
    <link rel="stylesheet" type="text/css" href="./css/index.css">
</head>
<body>
    <div id="test">
        <button type="button" @click="destroyVue">卸载 viewModel</button>
        <p v-show="isShow">生当作人杰，死亦为鬼雄。</p>
    </div>
    <script src="./js/vue.js"></script>
    <script>
        new Vue({
            el: "#test",
            data:{
                isShow: true
            },
            methods:{
                destroyVue(){
                    this.$destroy();
                }
            },
            mounted(){    // 初始显示之后立即执行: 执行异步任务
           this.timerId = window.setInterval(()=>{
               console.log("27 ---- mounted");
               this.isShow = !this.isShow
           }, 1000)
       },
       beforeDestroy(){
           console.log("32 ---- beforeDestroy");
           window.clearInterval(this.timerId)
       },
       /****************************************************************************/
            beforeCreate(){
                console.log("36      beforeCreate")
            },
            created(){
                console.log("40      createdcreated")
            },
            beforeMount(){
                console.log("42      beforeMount")
            },
            beforeUpdate(){
                console.log("46      beforeUpdate")
            },
            updated(){
                console.log("49      updated")
            },
            destroyed(){
                console.log("52      destoryed")
            }
        })
    </script>
</body>
</html>

 

posted @ 2019-02-15 18:39  耶梦加德  阅读(154)  评论(0)  编辑  收藏  举报