Vue 组件生命周期

生命周期

• 挂载阶段
• 更新阶段
• 销毁阶段

单个组件的生命周期

比如一个 TodoList 功能，父组件 Index.vue，子组件 List.vue ，代码参考：

https://lzwdot.com/docs/26811

父子组件 created 和 mounted 周期

beforeCreate
created
beforeMount
 children beforeCreate
 children created
 children beforeMount
 children mounted
mounted
 children activated
activated

父子组件 update 周期

before update
 child before update
 child updated
updated

父子组件 destroyed 周期，通过路由切换可以触发 destroyed 事件

beforeDestroy
 child beforeDestroy
 child destroyed
destroyed

父子组件 keep-alive 周期

beforeCreate
created
beforeMount
 children beforeCreate
 children created
 children beforeMount
 children deactivated
Other deactivated
 children mounted
mounted
 children activated
activated