遇到vue的一个报错红色警告

Question

Property or method "activeItem" 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.

我在进行接口操作时，修改了用户的账号密码，然后出现了以上的错误

Answer 1

activeItem属性或方法没有定义，检查一下后台返回值，或者查看一下代码顺序是否存在逻辑错误。