I Have design a sencha app that is running fine enough on chrome and mozilla. but it's not working with ie8 and i have to test it on ie8 also for my client. it's working fine on higher version of ie like ie9 and ie10 is there anyone who can help me to make it compatible with ie8.
Are you sticking strictly to using ExtJS code? A common issue that might be preventing your application from loading might be the usage of console.log()s. Another thing you'll want to check for is making sure you don't have any trailing commas, or missing semicolons. If that fails, chances are you are using some native JavaScript or some other library that isn't compatible with IE8.