Class manipulation methods in jQuery are really handy, but when you need just them and nothing else out of jQuery, then using entire library seems like a little bit mistake. Using own versions of
hasClass sounds like a better idea and for this reason I have wrote following article, where you’ll find an example implementation of these methods.
Original functions were taken form here [http://www.avoid.org/?p=78]. But since I don’t know regular expressions (and even more — I don’t like complicating easy things) and because original one wasn’t working correctly in some rare occasions, I rewrote them my own to following shape:
document.hasClass = function(objectName, className)
return (objectName.className.indexOf(className) != -1);
document.addClass = function(objectName, className)
if(!document.hasClass(objectName, className)) objectName.className += (objectName.className ? ‘ ‘ : ”) + className;
document.removeClass = function(objectName, className)
if(document.hasClass(objectName, className)) objectName.className = objectName.className.replace(className, ”);
You may also be interested in “getElementsByClassName without jQuery” article.