问题
I have a terrible repeating error of 404 not found for a GET request.
The call looks like this in the JavaScript console
GET some_path/undefined 404 ( Not Found )
and all it states to the right of that is:
undefined:1
It keeps repeating over and over, it does not stop. How can I determine what line is trying to make this call?
回答1:
On chrome you can add breakpoints on XHR and then you should see the callstack. Go to developer tools -> "sources" tab -> "XHR Breakpoints" and add a breakpoint filtered by the relevant URL
来源：https://stackoverflow.com/questions/34142255/how-can-i-determine-what-line-is-causing-a-404-error