This demo is powered by the following code:

Look at the source option to see the possible values.

$(function() {
	$( "#autocomplete" ).autocomplete({
		source: [
			{
				label: "aardvark", 
				value: "aardvark"
			},
			{
				label: "<b>apple</b>",
				value: "apple"
			},
			{
				label: "<i>atom</i>",
				value: "atom"
			}
		],
		html: true
	});
});