debugging - Export Javascript Console log from Google Chrome

Question

Is there any way to export messages logged to the javascript console in Google Chrome?

If not, can anyone suggest a good way to diagnose javascript problems on a client's machine? I have not been able to replicate the problems locally, despite setting up an identical environment.

Answer 1

Step 1: Add a bunch of console.log statements that will help diagnose your issue

Step 2: Add logic to re-define console.log on your client's system so that it actually saves its arguments to window.log (or whatever) instead of actually logging them to the console.

window.log = []
console = console || {"log":function(x) {window.log.push(x);}}

Step 3: Add an onUnload handler which fires of an AJAX request to your server with the contents of window.log as one of its parameters

Step 4: Profit! ;-)

An added bonus to this system is that (once you have it setup) you can use console.log indiscriminately, and whether you're in your dev environment or your live environment it will do the correct thing.