Switching class between two elements using jQuery

I have two elements with a class name each. And on some event I'd like them to switch class.

So basically I'd 开发者_JAVA技巧like to do something like this:

$("#div1").switchClassWith("#div2");

<div id="div1" class="someStylingClass">...content...</div>
<div id="div2" class="someOtherClass">...content...</div>

And this would result in #div1 having someOtherClass as its class name, and #div2 have someStylingClass... Any suggestions?

You could use toggleClass():

 $('#div1,#div2').toggleClass('someStylingClass someOtherClass');

Assuming you start with the example you posted, where each element has one class or the other (but not both) then this will work as expected.

If you need to swap the classes without knowing what classes you're swapping, you can do:

var $div1 = $('#div1'), $div2 = $('#div2'), tmpClass = $div1.attr('class');
$div1.attr('class', $div2.attr('class'));
$div2.attr('class', tmpClass);

function SwitchClass(a,b){
  var aClass = a.attr('class');
  var bClass = b.attr('class');
  a.removeClass(aClass).addClass(bClass);
  b.removeClass(bClass).addClass(aClass);
}


SwitchClass($('div1'),$('div2'));

pseudo code

function swapClasses(element1, element2)
{
   class1List1 = getClassList(element1)
   classList2 = getClassList(element2)

   for class in classList1
   {
       element2.addClass(class)
   }

   //similarly for element1
}

function getClassList(element)
{
   //refer to http://stackoverflow.com/questions/1227286/get-class-list-for-element-with-jquery
}

jQuery UI switchClass ?