JQuery Autocomplete Categoriesの例を見てください。この例では、オートコンプリートを継承するカスタムウィジェット内のオートコンプリートウィジェットの_renderMenuをオーバーライドする方法があります。
http://jqueryui.com/autocomplete/#categories
サンプルJSフィドル http://jsfiddle.net/ud3sh/v2Agq/4/
var data = [
{ label: "America", category: "" },
{ label: "Angola", category: "" },
{ label: "Andora", category: "" },
{ label: "Amtrak", category: "Companies" },
{ label: "Amazon", category: "Companies" },
{ label: "American Airlines", category: "Companies" },
{ label: "Amber L", category: "People" },
{ label: "Amy Quatro", category: "People" },
{ label: "Andrée González", category: "People" }
];
//widget extension
$.widget("custom.catautocomplete", $.ui.autocomplete, {
//NOTE: this will process the items in order, so a category could show up multiple times
_renderMenu: function (ul, items) {
var that = this;
var currentCategory = "";
$.each(items, function (index, item) {
if (item.category != currentCategory) {
ul.append("<li class='ui-autocomplete-category'>" + item.category + "</li>");
currentCategory = item.category;
}
that._renderItemData(ul, item);
});
}
});
$("#search").catautocomplete({
source: function (request, response) {
var matcher = new RegExp($.ui.autocomplete.escapeRegex(request.term), "i");
response($.grep(data, function (value) {
return matcher.test(value.label) || matcher.test(normalize(value.label));
}));
}
});
//utilities for accent mapping
var accentMap = {
"á": "a","ö": "o","é" : "e"
};
var normalize = function (term) {
var ret = "";
for (var i = 0; i < term.length; i++) {
ret += accentMap[term.charAt(i)] || term.charAt(i);
}
return ret;
};