jQuery changing css class to div

Question

If I have one div element for example and class \'first\' is defined with many css properties. Can I assign css class \'second\' which also has many properties differently

Answer 1

$(".first").addClass("second");

If you'd like to add it on an event, you can do so easily as well. An example with the click event:

$(".first").click(function() {
    $(this).addClass("second");
});