參考: https://www.jianshu.com/p/d61f55da98fb
https://www.cnblogs.com/fly_dragon/p/6220273.html
官網: https://cn.vuejs.org/v2/guide/instance.html
參考: https://www.jianshu.com/p/d61f55da98fb
https://www.cnblogs.com/fly_dragon/p/6220273.html
官網: https://cn.vuejs.org/v2/guide/instance.html