Class Ext.form.BasicForm

• scope {Object} The scope in which to execute the handler function. The handler function's "this" context.
• delay {Number} The number of milliseconds to delay the invocation of the handler after te event fires.
• single {Boolean} True to add a handler to handle just the next firing of the event, and then remove itself.
• buffer {Number} Causes the handler to be scheduled to run in an Ext.util.DelayedTask delayed by the specified number of milliseconds. If the event fires again within that time, the original handler is not invoked, but the new handler is scheduled in its place.

Combining Options
Using the options argument, it is possible to combine different types of listeners:

A normalized, delayed, one-time listener that auto stops the event and passes a custom argument (forumId)

el.on('click', this.onClick, this, {
 			single: true,
    		delay: 100,
    		forumId: 4
		});

Attaching multiple handlers in 1 call
The method also allows for a single argument to be passed which is a config object containing properties which specify multiple handlers.

el.on({
			'click': {
        		fn: this.onClick,
        		scope: this,
        		delay: 100
    		}, 
    		'mouseover': {
        		fn: this.onMouseOver,
        		scope: this
    		},
    		'mouseout': {
        		fn: this.onMouseOut,
        		scope: this
    		}
		});

Or a shorthand syntax which passes the same scope object to all handlers:

el.on({
			'click': this.onClick,
    		'mouseover': this.onMouseOver,
    		'mouseout': this.onMouseOut,
    		scope: this
		});

Property          Type             Description
----------------  ---------------  ----------------------------------------------------------------------------------
url               String           The url for the action (defaults to the form's url)
method            String           The form method to use (defaults to the form's method, or POST if not defined)
params            String/Object    The params to pass (defaults to the form's baseParams, or none if not defined)
clientValidation  Boolean          Applies to submit only.  Pass true to call form.isValid() prior to posting to
                                   validate the form on the client (defaults to false)