Uncaught (in promise) ReferenceError: plus is not defined

这个错误是因为在你的代码中引用了一个未定义的变量"plus"。要解决这个问题，你可以检查一下代码中是否有声明或定义了"plus"变量，或者确认是否写错了变量名。如果是引用外部的函数或方法，确保已经正确导入或加载了相关的库或文件。另外，也可以在代码中使用try-catch语句来捕获和处理这个错误，以避免程序终止。

相关问题

measurement.vue:148 Uncaught (in promise) ReferenceError: plus is not defined

这个错误提示表明在 `measurement.vue` 文件中的第 148 行使用了一个未定义的变量 `plus`。你需要检查代码中是否定义了 `plus` 变量，或者是否拼写错误。

如果是因为拼写错误导致的问题，你只需要将变量名更正即可。如果是因为未定义变量，你需要检查变量是否被正确声明或者是否在正确的作用域内。

Uncaught ReferenceError: plus is not defined

This error message usually occurs when you try to use a variable or function that has not been declared or defined in your code. In this case, the error is specifically stating that the variable "plus" is not defined.

To resolve this error, you need to make sure that the variable "plus" is declared and defined before using it in your code. Here's an example of how you can define and use the "plus" variable in JavaScript:

// Declare and define the plus function
function plus(a, b) {
  return a + b;
}

// Call the plus function
console.log(plus(2, 3)); // Output: 5

Make sure that the variable or function you are trying to use is properly declared and defined in your code before using it.