I am debugging a large, complex web page that has a lot of JavaScript, JQuery, Ajax and so on. Somewhere in that code I am getting a rouge request (I think it is an empty img) that calls the root of the server. I know it is not in the html or the css and am pretty convinced that somewhere in the JavaScript code the reqest is being made, but I can't track it down. I am used to using firebug, VS and other debugging tools but am looking for some way to find out where this is executed - so that I can find the offending line amongst about 150 .js files.
Apart from putting in a gazzillion console outputs of 'you are now here', does anyone have suggestions for a debugging tool that could highlight where in Javascript requests to external resources are made? Any other ideas?
Step by step debugging will take ages - I have to be careful what I step into (jQuery source - yuk!) and I may miss the crucial moment