Vue报错：Method "msg" has already been defined as a data property./this.msg is not a function……

Vue 报错信息：

[Vue warn]: Method "msg" has already been defined as a data property.
[Vue warn]: Error in mounted hook: "TypeError: this.msg is not a function"
TypeError: this.msg is not a function ……

原因：

在 Vue 中：computed(计算属性)；data；props 都会被挂在在 vm 实例上，因此不能同名。

也不能与函数名同名。

键名优先级：props > data > methods