How to debug a JavaScript error in IE

1.From Internet Explorer go to Tools-> Internet Options -> Advanced, uncheck “Disable Script Debugging (Internet Explorer)” and check “Display a notification about every script error’’
2. Download and install VSE
3. Creatie a new empty website in VWD express
4. Click on “Start Debugging” button. Enable debugging for this site when you are prompted to do so. do so. VSE will now launch IE in the debugging mode. Since your site is empty you will get a 404 error message, ignore the error message and go to the actual page you want to debug.
5.Now start debugging the page and note that if there is any script errors, IE to pause and the control will transfer to VSE.