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Though i removed trailing comma, in my mvc project, it's not loading in IE 8. Can building this app for deployment resolve this issue ? I'm not sure why this issue occurs

Leo
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  • you need to be more specific, what errors do you get ? – nscrob Jul 18 '12 at 11:45
  • undefined is null or not an object – Leo Jul 18 '12 at 12:43
  • you should have a stack trace of where the error occurred. – nscrob Jul 18 '12 at 13:19
  • The above error is occurring in ext-all.js – Leo Jul 18 '12 at 14:47
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    you have just defined a normal extjs error, you can replace ext-all.js with ext-all-debug.js which isn't minified and then set breakpoints where it fails. you have to see what component fails and when (posibly during layout calculation, ie8 being very strict about the html structure generated). – nscrob Jul 18 '12 at 18:18
  • I fixed all the issues, i'm not getting any error, but the components are rendering too slowly, even sometimes showing "A script on this page is causing your web browser to run slowly. If it continues to run, your computer might become unresponsive". Anything i can do with ExtJS ? The same code works without any such messages in FF, Chrome. – Leo Aug 03 '12 at 08:43
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    That's nothing unusual , extjs 4 (also extjs in general) has performance problems in ie. I'm guessing you are using 4.0.x They claimed they solved 'some' problems in 4.1, you can check the charts in this link http://www.sencha.com/blog/ext-js-4-1-developer-preview/ , but nevertheless, try without your developer tools open, because that slows ie a lot. Most problems for ie is due to the layout so, a try to keep your dom to a minimum, by destroying unused components. Cheers, hope it helps – nscrob Aug 03 '12 at 09:10

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