jQuery removeClass wildcard

I've written a plugin that does this called alterClass – Remove element classes with wildcard matching. Optionally add classes: https://gist.github.com/1517285

$( '#foo' ).alterClass( 'foo-* bar-*', 'foobar' )

The removeClass function takes a function argument since jQuery 1.4.

$("#hello").removeClass (function (index, className) {
    return (className.match (/(^|\s)color-\S+/g) || []).join(' ');
});

Live example: http://jsfiddle.net/xa9xS/1409/

If you want to use it in other places I suggest you an extension. This one is working fine for me.

 $.fn.removeClassStartingWith = function (filter) {
    $(this).removeClass(function (index, className) {
        return (className.match(new RegExp("\\S*" + filter + "\\S*", 'g')) || []).join(' ')
    });
    return this;
};

Usage:

$(".myClass").removeClassStartingWith('color');

$('div').attr('class', function(i, c){
    return c.replace(/(^|\s)color-\S+/g, '');
});