JSON parse error, unexpected character

[Prashant Jain‏]

I keep getting the above error. There are times when I don't get this error but most of the time I do. Please see the attached screen shot.

I have recommended JSTestDriver to my team. But I am now noticing that it is unstable and unpredictable. My stubbed functions are called and sometimes they are not. I get the JSON parse error and sometimes I don't. 

I am almost at a point where I am exploring headless QUnit. 

[Cory Smith‏]

The screenshot really isn't helpful for reproduction. Do you have anything else?

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[Vitali S.‏]

Hi,

I think the problem is the content to are going to parse into a JSON object. Try it with some other content.
Please see the following post http://stackoverflow.com/questions/9492916/putting-html-in-json
and also http://www.json.org/

Vitali

[Cory Smith‏]

It's more of a question about *when* it happens. I still need more
information to reproduce the issue.

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[Baz‏]

It's pretty obvious from that screenshot (if you've messed with web
services before). It's trying to parse json, but "data" is html (not
json with html in it - it's just html). The most common cause of this
is serving json from an endpoint where all the error responses (404,
500, etc) are html, and the js handling the response ignores the code;
or worse, that errors are funneled through an error page which serves
a 200 response code.

So the wrong thing is being passed into jQuery.parseJSON(data). What's
the stacktrace? Have you looked at the content of 'data' to see what
html you were trying to parse? I'm guessing it's going to be an error
page and its contents will be a big clue as to what's wrong here.

-B