Change CSS rule in class using JQuery

Question

I have a class in CSS

.Foo
{
  width:20px;
}

Using Jquery I would like to do something similar to this on an event:

$(\".Fo         


        

Answer 1

You should be selecting an element with jQuery. You're aware that you aren't selecting the CSS class itself, correct?

Once you have an element with class="Foo", you can select it as you have, and either set css properties manually like you're trying to do, or you can use add class like so:

$(".Foo").addClass('Foo');

Granted of course, since you're selecting the same class that you're adding, it doesn't really make sense.