https://blog.csdn.net/aliujiujiang/article/details/107104321?utm_medium=distribute.pc_aggpage_search_result.none-task-blog-2allsobaiduend~default-1-107104321.nonecase&utm_term=vue%20%E5%87%BD%E6%95%B0%E5%BC%8F%E7%BB%84%E4%BB%B6%E5%AE%9E%E6%88%98
- 内部监听生命周期函数
- 外部监听生命周期函数
3.用Vue.observable手写一个状态管理吧
4.深度watch与watch立即触发回调,$watch
