Uncaught TypeError: _this.setTemplateDetails is not a function at Object.onChange

这个错误通常表示您正在尝试在未定义的对象上调用方法。在这种情况下，错误发生在 `onChange` 函数中，该函数尝试调用一个名为 `setTemplateDetails` 的方法，但是 `_this` 对象上没有 `setTemplateDetails` 方法。

这种情况通常发生在您试图在一个不正确的上下文中调用方法。请检查 `_this` 对象是否已经被正确地声明和初始化，并且 `setTemplateDetails` 方法是否已经被正确地定义。如果您仍然无法解决问题，请提供更多上下文或代码，以便我能够更好地帮助您找到问题所在。

相关问题

Uncaught TypeError: _ctx.deleteById is not a function

This error message is indicating that there is a problem with the code where the function deleteById is being called. It looks like the function is not defined properly or it does not exist.

To fix this error, you need to ensure that the deleteById function is defined properly and that it is accessible from the code where it is being called. You should also check that the parameter being passed to the function is of the correct type, as this can sometimes cause this type of error.

If you are still having trouble after checking these things, it may be helpful to review the code and try to identify any other issues that could be causing the problem. It can also be useful to consult the documentation or seek help from other developers who may have experience with similar issues.

Uncaught TypeError: _ctx.drop is not a function at onClick (Cart.vue:44:1) at callWithErrorHandling (runtime-core.esm-bundler.js:6656:1) at callWithAsyncErrorHandling (runtime-core.esm-bundler.js:6665:1) at HTMLSpanElement.invoker (runtime-dom.esm-bundler.js:347:1)怎么解决

这个错误通常是因为您的代码中引用了一个未定义的函数名。您需要确保函数名正确且该函数被正确定义。在这种情况下，您需要检查 `Cart.vue` 文件中的第44行代码，并确保 _ctx.drop 是一个正确定义的函数。您还可以在调用该函数之前添加一些条件，以确保该函数存在。例如：

if (_ctx.drop && typeof _ctx.drop === 'function') {
  _ctx.drop();
} else {
  console.error('_ctx.drop is not a function');
}

这个条件检查将确保 _ctx.drop 是一个已定义的函数，并且可以安全地调用它。