How can I create a XMLHttpRequest wrapper/proxy?

Question

These methods that come to mind, what are the pros and cons of each?

Method 1: Augment native instance

var _XMLHttpRequest = XMLHttpRequest;
XMLHttpR         


        

Answer 1

I have tried all 3. I have to intercept calls from within code that I do not manage that already has Boomerang AutoXHR plugin running and intercepting calls. #2 and #3 just resulted in errors but #1 worked perfectly in my strange messed up use-case.