VUE 解决：Property or method "deleteFun" is not defined on the instance but referenced during render.

1. 一个点击事件报错：

Property or method "deleteFun" 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

2. 报错原因：这个方法未定义。我以为是写在methods中的，其实不是。我原写法：

 

3.解决：改正图中红框中位置代码。

这样就可以了。