[Vue warn]: Property or method "sendMsg" is not defined on the instance but referenced during render
[Vue warn]: Property or method “sendMsg” is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option, or for class-based components, by initializing the property.
1.真的绝了，学习父子组件相互传值自己写了个demo,老是出现此错误，查了很多博客赶脚自己写的都是对的，具体错误如下：
2.然后各种搜各种搜，就是觉得自己写的完全没错，看看你能不能看出来我的问题哟
3.最后最后竟然是字母拼错了，马虎的要了老命
4.最后提醒大家要好好的看看自己代码，哈哈哈哈，来自一只小菜鸟的忠告！~