Vue生命周期簡介：
Vue1.0+和Vue2.0在生命周期鈎子上的區別還是很大的，如下：
代碼驗證：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script type="text/javascript" src="https://cdn.jsdelivr.net/vue/2.1.3/vue.js"></script>
</head>
<body>
<div id="app">
<p>{{ message }}</p>
</div>
<script type="text/javascript">
var app = new Vue({
el:'#app',
data:{
message:"Toney is a girl"
},
beforeCreate:function(){
console.group('beforeCreat 創建前的狀態======》'); //控制台輸出的語句產生不同的層級嵌套關系
console.log("%c%s","color:red","el : "+this.$el); //undefined, %c字符%s字符串
console.log("%c%s","color:red","data : "+this.$data"); //undefined
console.log("%c%s","color:red","message: "+this.message); //undefined
},
created:function(){
console.group("created 創建完畢狀態======》");
console.log("%c%s","color:red","el : "+this.$el); //undefined
console.log("%c%s","color:red","data : "+this.$data"); //已被初始化
console.log("%c%s","color:red","message: "+this.message); //已被初始化
},
beforeMount:function(){
console.group("beforeMount 掛載前狀態======》");
console.log("%c%s","color:red","el : "+this.$el); //已被初始化
console.log("%c%s","color:red","data : "+this.$data"); //已被初始化
console.log("%c%s","color:red","message: "+this.message); //已被初始化
},
mounted:function(){
console.group("mounted 掛載結束狀態======》");
console.log("%c%s","color:red","el : "+this.$el); //已被初始化
console.log("%c%s","color:red","data : "+this.$data"); //已被初始化
console.log("%c%s","color:red","message: "+this.message); //已被初始化
},
beforeUpdate:function(){
console.log("beforeUpdate 更新前狀態======》");
console.log("%c%s","color:red","el:"+this.$el);
console.log("%c%s","color:red","data:"+this.$data);
console.log("%c%s","color:red","message:"+this.$message);
},
updated:function(){
console.log("updated 更新完成狀態======》");
console.log("%c%s","color:red","el:"+this.$el);
console.log("%c%s","color:red","data:"+this.$data);
console.log("%c%s","color:red","message:"+this.$message);
},
beforeDestory:function(){
console.log("beforeDestory 銷毀前狀態======》");
console.log("%c%s","color:red","el:"+this.$el);
console.log("%c%s","color:red","data:"+this.$data);
console.log("%c%s","color:red","message:"+this.$message);
},
destoryed:function(){
console.log("destoryed 銷毀完成狀態======》");
console.log("%c%s","color:red","el:"+this.$el);
console.log("%c%s","color:red","data:"+this.$data);
console.log("%c%s","color:red","message:"+this.$message);
}
})
</script>
</body>
關於更新
在chrome console中輸入命令：
app.message="I am a girl"
關於銷毀
在chrome console中輸入命令：
app.$destroy();
生命周期總結：
beforecreate: 例子：可以在這加個loading事件；
created：在這結束loading，還做一些初始化，實現函數自執行；
mounted： 在這發起后端請求，拿回數據，配合路由鈎子做一些事情；
beforeDestory： 你確認刪除XX嗎？ destoryed ：當前組件已被刪除，清空相關內容。