Animating AddClass/removeClass With JQuery

Answer :

Since you are not worried about IE, why not just use css transitions to provide the animation and jQuery to change the classes. Live example: http://jsfiddle.net/tw16/JfK6N/

#someDiv{     -webkit-transition: all 0.5s ease;     -moz-transition: all 0.5s ease;     -o-transition: all 0.5s ease;     transition: all 0.5s ease; } 

Another solution (but it requires jQueryUI as pointed out by Richard Neil Ilagan in comments) :-

addClass, removeClass and toggleClass also accepts a second argument; the time duration to go from one state to the other.

$(this).addClass('abc',1000); 

See jsfiddle:- http://jsfiddle.net/6hvZT/1/

You could use jquery ui's switchClass, Heres an example:

$( "selector" ).switchClass( "oldClass", "newClass", 1000, "easeInOutQuad" ); 

Or see this jsfiddle.