Better way to call superclass method in ExtJS

Question

All the ExtJS documentation and examples I have read suggest calling superclass methods like this:

MyApp.MyPanel = Ext.extend(Ext.Panel, {
  initComponent: f         


        

Answer 1

You could use this little known Javascript feature (arguments.callee):

MyApp.MyPanel = Ext.extend(Ext.Panel, {
    constructor: function() {
        // Do your thing
        this.thing = 1;

        // Call super
        arguments.callee.superclass.constructor.apply(this, arguments);
    }
});

see MDC documentation

Edit: Actually, this isn't going to work with initComponent because it isn't the constructor. I always override the constructor, personally (despite what Ext JS examples suggest). Will continue to think about this one a bit.