VUE 解决：Method "xxx" has already been defined as a data property.

1.调用方法报错：

Method "changePage" has already been defined as a data property.

代码写法：

2.解决方法：改变方法名。我其实不太理解，为什么不能用那个名字。依旧只能猜测可能类似java的保留关键字吧。