JQuery :: Best Way To Bind Events To Multiple Elements?

Im working on a ajax app and not sure what is the best way to bind events to elements (performance wise).I have a number of elements with 'click', 'focus', 'keydown' events which can be assigned though the delegate to the parent, like so:$('#parent').delegate('#child', 'click', func.....)but is it better to add a delegate to the 'document' for multiple events and use IF statement to filter for elements which should fire an event, like so:[code]Each element can be replaced with an updated version retrieved from the server.