• 加载渲染过程

　　父beforeCreate->父created->父beforeMount->子beforeCreate->子created->子beforeMount->子mounted->父mounted

• 子组件更新过程

　　父beforeUpdate->子beforeUpdate->子updated->父updated

• 父组件更新过程

　　父beforeUpdate->父updated

• 销毁过程

　　父beforeDestroy->子beforeDestroy->子destroyed->父destroyed