Question

I want to just change one of the elements in a class with jQuery

.myClass
{
   background-color:#FFFFFF;
}

I want to programatically change this

Answer 1

If you want to add the myClass class to a DOM element:

myElement.addClass("myClass");

If you want to remove the myClass class from a DOM element:

myElement.removeClass("myClass");

For more information, see the jQuery docs on hasClass, addClass, removeClass, and toggleClass.