View Full Version : Debugging in ExtJS

3 Sep 2011, 9:05 AM

I am learning to use ExtJS the hard way - debugging a large ASP.NET application with no prior experience in ExtJS or even jQuery. I have overcome several hurdles, but find I need help with my current problem.

The code is breaking in a file associated with a master page - default.master.js and Visual Studio displays this message:

Microsoft JScript runtime error: Unable to get value of the property 'add_endRequest': object is null or undefined

The line of code is:

I am having a hard time wrapping my head around what is going on. Can someone give me some ideas on what to look for?


7 Sep 2011, 2:56 PM
There are a lot of posts in this forum that never get a reply.

8 Sep 2011, 1:16 AM
That doesn't look like Ext code, more like some Microsoft ASP stuff. Is the error happening in the browser or server? For browser side debugging Firebug, an add-on for Firefox, or the similar Chrome development tools, are indispensable for developing Ext applications.