VUE 组件 事件传递

原文：
https://blog.csdn.net/wangming0123/article/details/109118618?utm_medium=distribute.pc_aggpage_search_result.none-task-blog-2_{aggregatepage}first_rank_v2~rank_v29-1-109118618.nonecase&utm_term=vue%E5%AD%90%E7%BB%84%E4%BB%B6%E4%BC%A0%E9%80%92%E4%BA%8B%E4%BB%B6&spm=1000.2123.3001.4430