Question

So, I have a large project with a bunch of javascript stuff going on.

Now I did some testing with IE9 and on one event triggered AJAX-operation it aborts and tells me

Syntax Error: Expected ')'

but that’s all it says. It leaves me without any clue about where to start looking.

I’m using Dojo for most of the things I do and at this particular point I’m retrieving JSON-data with the AJAX-request. But I’ve ruled out an error in the JSON-string, simply because JSON ususally does not contain brackets (), right?

There also is a console.log(data) right after the request should be completed, but it doesn’t fire either. And I don’t see any fancy bracketwork before that, that could make IE lose it’s mind. But I might still be looking at the wrong spot, just trying to give as much info as possible here.

(btw: Firefox is fine with everything. No errors or warnings; everything runs just fine)

What’s the best way to debug this or possible causes?

Answer 1

It was the response from AJAX after all.

IE had problems sending all the GET parameters resulting in an error message being mixed with the JSON code. I still don’t understand why it expected a ) but fixing the response fixed the issue.