IE9说语法错误，但不是在哪里？(IE9 says Syntax Error but not where?)

 所以，我有一个大型项目，其中包含大量的javascript内容。 
 
 现在我用IE9进行了一些测试，并且在一个事件触发了AJAX操作时它会中止并告诉我 
 
Syntax Error: Expected ')'
 
 但就是这样。 它让我不知道从哪里开始寻找。 
 
 我正在使用Dojo处理我所做的大部分事情，在这一点上，我正在使用AJAX请求检索JSON数据。 但是我已经排除了JSON字符串中的错误，因为JSON通常不包含括号() ，对吧？ 
 
 在请求完成之后还有一个console.log(data) ，但它也不会触发。 在此之前我没有看到任何花哨的括号，这可能会让IE失去理智。 但我可能仍然在寻找错误的地方，只是想在这里提供尽可能多的信息。 
 
 （顺便说一下：Firefox对一切都很好。没有错误或警告;一切运行都很好） 
 
 调试此原因或可能原因的最佳方法是什么？ 

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?

原文：https://stackoverflow.com/questions/13458387