View Full Version : Extjs4 tree panel is loading slowly in IE7

5 Dec 2011, 2:46 AM

Am loading a tree panel with bulk amount of node with lot of child nodes , it had run perfectly in Extjs3.x version with IE and FireFox.

Now Using Extjs4 getting the following message, when I ran in IE7. Working fine in FireFox.

"A script on this page is causing Interner Explorer to run slowly,if it continues run your computer may be unresponsive"

5 Dec 2011, 4:50 AM
to get rid of the IE error message, use the "fit it" tool microsoft provides:

the rendering performance in ext 4 is slower than in 3, this will get a lot better when the 4.1 beta releases. make sure you keep the amount of nodes as small as possible.

15 Mar 2012, 11:32 PM
Is there any fixes or work around for this in Ext 4.0.7. As we are about to release , and when we were doing a performance test we see the smae issue.

Any suggestions? what would be the best way to load the tree in this scenario.

12 Jun 2013, 12:45 PM
ExtJS is on version 4.2.1 and this is still and issue. Ive tried the "new" lazyFill option, that do fixes loads of problems but create new ones....

This new option is not even documented, can you guys point us to the right direction?!