Question

Our product inserts a script into client’s websites, kind of like a live chat box.

Often, clients’ websites have buggy javascript that also stops our code (the browser stops execution when errors are encountered). Is there any way to make our code still execute even though there are errors in the console about things like undefined methods or variables?

Thanks for your help.

Answer 1

As others have said, continuing after an error might not be the best thing to do but you can try this:

function ignoreerror()
{
   return true
}
window.onerror=ignoreerror();

More details here

The onerror event fires whenever an JavaScript error occurs (depending
on your browser configuration, you may see an error dialog pop up).
The onerror event is attached to the window object, a rather unusual
place to take refuge in, but for good reason. It is attached this way
so it can monitor all JavaScript errors on a page, even those in the
section of the page.

Opera has a page with more details

Browsers supporting window.onerror
Chrome 13+
Firefox 6.0+
Internet Explorer 5.5+
Opera 11.60+
Safari 5.1+