父子组件的生命周期钩子
1.创建阶段
beforeCreated(父)---------------->Created(父)------------------->beforeCreated(子)--------------------->Created(子)----------------Mounted(子)-----------------Mounted(父)
2.加载渲染
beforeCreated(父)--------------->Created(父)------------------>beforeMounted(父)
beforeCreated(子)--------------->Created(子)------------------>beforeMounted(子)
Mounted(子)-----------------Mounted(父)
3.更新过程
beforeUpdated(父)------------------->beforeUpdated(子)----------------updated(子)----------updated(父)
4.销毁过程
beforeDestory(父)-----------beforeDestory(子)-----------------destoryed(子)---------------destoryed(父)