TypeError: item.tagName.map is not a function 解决方法

这个错误通常是在访问DOM元素时出现的，可能是因为变量没有正确引用DOM元素对象。解决方法可能包括以下几种：

1. 检查代码中变量的引用方式是否正确，确保变量引用了DOM元素对象而不是其他类型的对象。

2. 检查代码中访问DOM元素的方式是否正确，例如使用getElementById等方法获取DOM元素。

3. 确认DOM元素对象是否存在，如需使用时确保已被正确创建或添加到页面中。

4. 确认代码是否在DOM元素加载完毕后执行，如需操作DOM元素，确保在页面加载完毕后再进行操作。

希望这些方法能够帮助你解决问题。

相关问题

TypeError: lstm.run(....).map is not a function

This error message is indicating that you are trying to call the `map` function on the output of the `run` method of an object called `lstm`, but `map` is not a function that can be called on the returned value.

There could be a few reasons for this error, including:

1. The `run` method of the `lstm` object may not actually return an iterable object that can be mapped over. In this case, you may need to modify your code to handle the output of `run` differently.

2. It's possible that there is a typo or mistake in your code that is causing the `map` function to be called on the wrong object or in the wrong context.

3. There may be a problem with the `lstm` object itself, such as it not being properly initialized or configured, which is causing the error to occur.

To fix this error, you may need to review your code and/or consult the documentation or source code for the `lstm` object to determine the correct way to use its `run` method and handle its output.

vue报TypeError: item.rId.includes is not a function

这个错误通常是因为item.rId不是一个字符串，而是一个undefined或者其他类型的值。你可以在使用includes方法之前，先判断一下rId是否存在或者是否为字符串类型。

例如：

if(typeof item.rId === 'string' && item.rId.includes('someValue')){
  // do something
}

或者：

if(item.rId && item.rId.includes('someValue')){
  // do something
}

这样可以避免TypeError: item.rId.includes is not a function的错误。