Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'childNodes') at changeLine (index.vue?eda9:2:72) at dealSVG (abnormalStatistic.vue?a38f:40:17) at changeBoard (abnormalStatistic.vue?a38f:23:17) at index.vue:2353:1

这个错误提示表明在你的代码中出现了一个未定义的对象，尝试读取其子节点属性时导致出错。具体来说，错误发生在`changeLine`函数的第2行，该函数在`abnormalStatistic.vue`文件的第40行的`dealSVG`函数中被调用，而`dealSVG`函数又在`abnormalStatistic.vue`文件的第23行的`changeBoard`函数中被调用。

要解决这个错误，你需要检查以下几个方面：

1. 确保你正在操作的对象存在且已正确定义。在`changeLine`函数的第2行之前，使用`console.log`或者调试工具检查该对象是否正确地被初始化和赋值。

2. 确保你正在操作的对象具有`childNodes`属性。在`changeLine`函数的第2行之前，使用`console.log`或者调试工具检查该对象是否确实具有`childNodes`属性。如果没有，你可能需要检查代码逻辑或者变量赋值是否正确。

3. 确保在调用函数之前，相关的参数和变量已经正确地传递和赋值。特别是在`dealSVG`和`changeBoard`函数中，确保传递给`changeLine`函数的参数是正确的，并且没有被意外地设置为`undefined`。

通过仔细检查以上几点，你应该能够找到并解决这个错误。如果问题仍然存在，请提供更多的相关代码以供进一步检查和帮助。

相关问题

index.vue?9cc6:353 Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'row')

This error occurs when the code is trying to access the 'row' property of an undefined object. This can happen if the object has not been properly initialized or if the code is trying to access an object that does not exist. To fix this error, you need to ensure that the object is properly initialized and that all necessary properties are defined. You can also add error handling code to catch any potential errors and prevent the code from crashing.

index.vue?400f:878 Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'code')

This error means that you are trying to access a property called 'code' on an object that is undefined. This can happen if you are trying to access a property of an object before it has been properly initialized, or if the object was not created at all.

To fix this error, you should check that the object exists before trying to access its properties. You can do this using an if statement or the optional chaining operator (?.). For example:

if (myObject && myObject.code) {
// do something with myObject.code
}

// or

const code = myObject?.code;
if (code) {
// do something with code
}

By doing this, you can avoid trying to access properties on undefined objects and prevent this type of error from occurring.