1、加载渲染过程parentbeforeCreate=>parentcreated=>parentbeforeMount=>childbeforeCreate=>childcreated=>childbeforeMount=>childmounted=>parentmounted2、子组件更新流程parentbeforeUpdate=>childbeforeUpdate=>childupdated=>parentupdated3、父组件更新流程parentbeforeUpdate=>parentupdated4、销毁流程parentbeforeDestroy=>childbeforeDestroy=>childdestroyed=>父母被摧毁
