Question

Is there a difference between:

<span id="test" class="one two"></span>

and

<span id="test" class="two one"></span>

If there are conflicting CSS rules on these classes does the order matter?

Are there any APIs in jQuery to reorder? When I call addClass() does it always go on the end?

Answer 1

The order doesn’t matter.

http://jsfiddle.net/rc8Yu/

css precedence

The important part here is

If two rules are equal in all of the above, the one declared last wins. CSS embedded in the html always come after external stylesheets regardless of the order in the html