jQuery.fn.sort = function()
	{
		return this.pushStack([].sort.apply(this, arguments), []);
	};

	jQuery.fn.sortOptions = function(sortCallback)
	{
		jQuery('option', this)
		.sort(sortCallback)
		.appendTo(this);
		return this;
	};
	
	jQuery.fn.sortOptionsByText = function()
	{
		var byTextSortCallback = function(x, y)
	{
		var xText = jQuery(x).text().toUpperCase();
		var yText = jQuery(y).text().toUpperCase();
		return (xText < yText) ? -1 : (xText > yText) ? 1 : 0;
	};
		return this.sortOptions(byTextSortCallback);
	};
	
	jQuery.fn.sortOptionsByValue = function()
	{
		var byValueSortCallback = function(x, y)
	{
		var xVal = jQuery(x).val();
		var yVal = jQuery(y).val();
		return (xVal < yVal) ? -1 : (xVal > yVal) ? 1 : 0;
	};
	
	return this.sortOptions(byValueSortCallback);
};

jQuery.fn.sort = function()
{
return this.pushStack([].sort.apply(this, arguments), []);
};
jQuery.fn.sortOptions = function(sortCallback)
{
jQuery('option', this)
.sort(sortCallback)
.appendTo(this);
return this;
};
jQuery.fn.sortOptionsByText = function()
{
var byTextSortCallback = function(x, y)
{
var xText = jQuery(x).text().toUpperCase();
var yText = jQuery(y).text().toUpperCase();
return (xText < yText) ? -1 : (xText > yText) ? 1 : 0;
};
return this.sortOptions(byTextSortCallback);
};
jQuery.fn.sortOptionsByValue = function()
{
var byValueSortCallback = function(x, y)
{
var xVal = jQuery(x).val();
var yVal = jQuery(y).val();
return (xVal < yVal) ? -1 : (xVal > yVal) ? 1 : 0;
};
return this.sortOptions(byValueSortCallback);
};

http://rickyrosario.com/blog/sorting-dropdown-select-options-using-jquery/

Incredibly useful. Great when you need to remove and add options to selectboxes.

Sort Options in a Select Box

dropdown, sort, jquery

jQuery