Vue2 构造器的生命周期

<div id="app">    <p>{{ message }}</p>    <p><button @click="increment">increment</button></p></div><button onclick="vm.$destroy()">销毁</button><script>    var vm=new Vue({        el:"#app",        data:{            message:1        },        methods:{            increment:function () {                this.message ++;            }        },        //10个生命周期 常用4 6 9 10        beforeCreate:function () {            console.log("1-beforeCreate 初始化之后");        },        created:function () {            console.log("2-created 创建完成");        },        beforeMount:function () {            console.log("3-beforeMount 挂载之前");        },        mounted:function () { //常用            console.log("4-mounted 被创建");        },        beforeUpdate:function () {            console.log("5-beforeUpdate 数据更新前");        },        updated:function () { //常用            console.log("6-updated 被更新后");        },        //<keep-alive></keep-alive>        activated:function () {            console.log("7-activated");        },        deactivated:function () {            console.log("8-deactivated");        },        beforeDestroy:function () { //常用            console.log("9-beforeDestroy 销毁之前");        },        destroyed:function () { //常用            console.log("10-destroyed 销毁之后");        }    })</script>

／／进入页面，console的输出：

1-beforeCreate 初始化之后
2-created 创建完成
3-beforeMount 挂载之前
4-mounted 被创建

／／点击一次 increment按钮
5-beforeUpdate 数据更新前
6-updated 被更新后

／／再点击一次 increment按钮
5-beforeUpdate 数据更新前
6-updated 被更新后

／／点击销毁按钮
9-beforeDestroy 销毁之前
10-destroyed 销毁之后