How to change element class on select option using jQuery

Answer 1

I achieved this by storing the default class, and removing that class whenever the select changes.

var selectedScheme = 'Default';

$('#color_scheme').change(function(){
    $('span').removeClass(selectedScheme).addClass($(this).val());
    selectedScheme = $(this).val();
});

A working example can be found here: http://jsfiddle.net/9PeAc/1/