Comments on: Some Common ExtJS Error Messages Explained

By: simplicus

simplicus — Fri, 29 Apr 2011 09:17:19 +0000

wow thx, helped me with the error message “this.config[a] is undefined”

By: Rashid

Rashid — Thu, 14 Apr 2011 13:44:58 +0000

Thanks!

By: felix

felix — Sun, 10 Apr 2011 17:33:16 +0000

I wish to know the cause of “a is undefined”.
thanks a lot

By: Manny Calavera

Manny Calavera — Mon, 04 Apr 2011 17:59:06 +0000

I was getting “this.addEvents is not a function” because I had an extjs button that had a function as a handler. The function’s name was “clientsGrid” and I was also creating my grid with the same variable name: “var clientsGrid = new Ext.grid.GridPanel” so when adding “new” on component creation does not work, make sure you don’t use the same name that the grid variable has on the function’s name.

Hope this helps, thanks for all the info.

By: Mark

Mark — Wed, 26 Jan 2011 07:55:26 +0000

As I was helped a couple of times by your list, I have another one to save others some time:
“cs is undefined”

Occurs when?
Extending a class, for example defining your own Panel class.

What’s wrong then?
Define “items” before calling “initComponent” on the superclass.

By: Bob Chesley

Bob Chesley — Tue, 18 Jan 2011 22:48:10 +0000

Thanks for putting this list together. It just saved me a bit of time.

By: Artur

Artur — Fri, 03 Dec 2010 09:12:53 +0000

if(me.fireEvent(BEFOREREQUEST, me, o))

error occured if you do this:

var req = new Ext.Ajax.request({
url: ‘/default/login/checkidentity’,
renderTo: document.body
});

Error because NEW operator used.

By: Hoazl

Hoazl — Thu, 30 Sep 2010 07:38:48 +0000

I know this post is over a year old, but I still use it as a reference, so …
You may want to add the error “me.fireEvent is not a function”, which simply means that you tried to instantiate a new Ajax-request; For example:
(wrong): [code] new Ext.Ajax.request ({ /* ... */ });[/code]
(correct): [code] Ext.Ajax.request ({ /* ... */ });[/code]

By: bubenkoff

bubenkoff — Tue, 31 Aug 2010 20:03:41 +0000

Man you’re great!

By: Trabz

Trabz — Tue, 24 Aug 2010 10:11:01 +0000

Thnks Alot bro, this has been very helpfull !