Function testChange

tests/jquery.js:3330–3354

( e )

	},

	testChange = function testChange( e ) {
		var elem = e.target, data, val;

		if ( !rformElems.test( elem.nodeName ) || elem.readOnly ) {
			return;
		}

		data = jQuery._data( elem, "_change_data" );
		val = getVal(elem);

		// the current data will be also retrieved by beforeactivate
		if ( e.type !== "focusout" || elem.type !== "radio" ) {
			jQuery._data( elem, "_change_data", val );
		}

		if ( data === undefined || val === data ) {
			return;
		}

		if ( data != null || val ) {
			e.type = "change";
			e.liveFired = undefined;
			jQuery.event.trigger( e, arguments[1], elem );
		}
	};

	jQuery.event.special.change = {
		filters: {