How to DEBUG your ExtJs code :-
Any JavaScript code can be debug using alert() box or console.log() or with the debug pointer in a debugger. Alert box: place an alert box in the code where you want to check the flow or any variable value. e.g alert('message to show' + variable); Development/debugging Tool: Debugger is the most important tool for any developer to check the issue and error in the code while developing. Ext JS is a JavaScript framework so it can be easily debugged using developer tools provided by or specific to different browsers. All the major browser have their developer tools available to test and debug JavaScript code. Popular debuggers are IE development tool for IE, firebug for firefox, chrome development tool for Chrome browser. Chrome debugger comes with Chrome browser but firebug has to get installed specifically as it doesn’t come as a package with firefox. Here is a link to install firebug for firefox browser http://getfirebug.com Shortcut to open development too...
