Vue报错：Property or method “x“ is not defined on the instance but…以及Invalid handler for event “click“

一下报了四个错误：

 Property or method "myprice" 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.

Invalid handler for event "click": got undefined

Error in nextTick: "TypeError: Cannot read properties of undefined (reading '_withTask')"

Cannot read properties of undefined (reading '_withTask')

如图：

 结果：是因为methods拼写错误。

查错过程：

1、引起错误的几种原因

（1）函数没有写到methods中去

（2）调用的函数没有定义

（3）调用的函数名写错了

2、排查

发现methods拼写错误。