Checking if the class attribute is empty and then removing it if true with jQuery

Question

I want to remove the class attribute from all elements that have an empty class attribute.

Eg:

`<li class="">One</li>`

becomes

<li>One</li>

I have been messing about for ages trying to work it out! The closest I got was

var len = $(".splitcolcontainer ul li[class]").val().length;
 if (len == 0)
  {
  $('.splitcolcontainer ul li').removeAttr("class");
  }

But no cigar. I know it's going to be desperately simple but no amount of Googling has show me the light! Cheers.

EDIT: As people have asked why I want to remove it, here is the whole script:

$(document).ready(function() {
     $( '.splitcolcontainer ol, .splitcolcontainer ul').each(function() {
          if($(this).is("ol")) { var ordered = true; }
          var colsize = Math.round($(this).find("li").size() / 2);
          $(this).find("li").each(function(i) {
               if (i>=colsize) {
                    $(this).addClass('right_col');
               }
            });
          if(ordered) {
               $(this).find('.right_col').insertAfter(this).wrapAll("<ol class='splitcol' start='" + (colsize+1) + "'></ol>").removeClass("right_col");

          } else {
                $(this).find('.right_col').insertAfter(this).wrapAll("<ul class='splitcol'></ul>").removeClass("right_col");            
            }

     });


    $('.splitcolcontainer').after('<div class="clear">&#160;</div>');
    $('.splitcolcontainer ul, .splitcolcontainer ol').wrap('<div></div>');
});

The reason there is an empty class is because I am adding the class 'right_col' and then removing it later on. I don't know whether there are going to be other classes or not so that's why I needed to check whether the attribute is empty. Thanks for the help so far!

Answer 1

$('*[class=""]').removeAttr('class');

Answer 2

I agree, it's very odd that removeClass leaves an empty class attribute hanging around. I would expect that after an addClass, removeClass would return the DOM to its original state.

What I've ended up doing is:

$(this).removeClass("my-class").filter('[class=""]').removeAttr('class');

which should be quite performant.

(My code is for an HTML editor, so it's important the code produced is as clean as possible.)