vue宣告週期 vue生命週期鉤子該怎麼用

2021-10-13 10:24:42 字數 2597 閱讀 9022

data: {

message : "monkeywang is boy"

beforecreate: function () {

console.group('beforecreate 建立前狀態***************》');

console.log("%c%s", "color:red" , "el : " + this.$el); //undefined

console.log("%c%s", "color:red","data : " + this.$data); //undefined

console.log("%c%s", "color:red","message: " + this.message)

created: function () {

console.group('created 建立完畢狀態***************》');

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(this.$el);

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(this.$el);

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.group('beforeupdate 更新前狀態***************》');

console.log("%c%s", "color:red","el : " + this.$el);

console.log(this.$el);

console.log("%c%s", "color:red","data : " + this.$data);

console.log("%c%s", "color:red","message: " + this.message);

updated: function () {

console.group('updated 更新完成狀態***************》');

console.log("%c%s", "color:red","el : " + this.$el);

console.log(this.$el);

console.log("%c%s", "color:red","data : " + this.$data);

console.log("%c%s", "color:red","message: " + this.message);

beforedestroy: function () {

console.group('beforedestroy 銷毀前狀態***************》');

console.log("%c%s", "color:red","el : " + this.$el);

console.log(this.$el);

console.log("%c%s", "color:red","data : " + this.$data);

console.log("%c%s", "color:red","message: " + this.message);

destroyed: function () {

console.group('destroyed 銷毀完成狀態***************》');

console.log("%c%s", "color:red","el : " + this.$el);

console.log(this.$el);

console.log("%c%s", "color:red","data : " + this.$data);

console.log("%c%s", "color:red","message: " + this.message)

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