转载--vue中的mixin的使用

感谢   https://blog.csdn.net/weixin_50576800/article/details/123099818?spm=1000.2115.3001.6382&utm_medium=distribute.pc_feed_v2.none-task-blog-personrec_tag-18.pc_personrec&depth_1-utm_source=distribute.pc_feed_v2.none-task-blog-personrec_tag-18.pc_personrec