4 Jan 2013 5:15 AM #1
Issue with IE7 How to debug?
I have an application that works in IE9 / Safari / Chrome / Firefox. It will not work in IE7 or IE9- Compatibility View and the error that is thrown is:
Unable to get value of the property 'isField': object is null or undefined ext-all.js, line 21 character 43078
I am not really sure how to debug this issue. Any suggestions?
4 Jan 2013 7:11 AM #2
You can try IE9 in IE7 mode (press F12), it sometimes exhibits the same behaviour...
Edit: Oh, you've tried that. Erm... do you get the same issue with ext-all-debug or ext-all-dev?Product Architect
4 Jan 2013 10:36 AM #3
As westy says, ext-all-dev with IE 9 Compatibility Mode is the way to go to debug it.
My guess would be that you have a stray comma, possibly in a fields array. Any half-decent IDE should be picking up that kind of mistake though.
8 Jan 2013 11:48 PM #4
Besides what guys suggested you you can debug in IE with Visual Studio. Don't remember the exactly steps, but following link may help you to get starting: http://www.codeproject.com/Articles/...vaScript-in-IE
9 Jan 2013 5:15 PM #5
Good point, I'd forgotten about that. I used to use this all the time before IE8 was released. It isn't just Visual Studio either, some other applications (e.g. some versions of Office) came bundled with a debugger. The article you linked seems to tally with my recollection of what was involved.
11 Jan 2013 11:35 AM #6
Use a VM with IE7 on it. Either make your own or Microsoft provides an image for these here: http://www.microsoft.com/en-us/downl....aspx?id=11575