If you want to keep console.log calls in your app event when your app is used on Firefox without the Firebug plug-in or on IE, you can add this line at the very first start of your JS code :
try { console.log('init console... done'); } catch(e) { console = { log: function() {} } }
This code tries to write some text in the Firebug console. If it fails (no Firebug plug in installed or under IE), it instantiate an object called 'console' that has a method called 'log' that does nothing !
