711 		add: function( elem, classNames ) {  argument
712 			jQuery.each((classNames || "").split(/\s+/), function(i, className){
719 		remove: function( elem, classNames ) {  argument
721 				elem.className = classNames !== undefined ?
723 						return !jQuery.className.has( classNames, className );
1225 	addClass: function( classNames ) {  argument
1226 		jQuery.className.add( this, classNames );
1229 	removeClass: function( classNames ) {  argument
1230 		jQuery.className.remove( this, classNames );
1233 	toggleClass: function( classNames, state ) {  argument
1235 			state = !jQuery.className.has( this, classNames );
1236 		jQuery.className[ state ? "add" : "remove" ]( this, classNames );