autocomplete jquery with select event

 
<script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.js">
    </script>
    <script type="text/javascript" src="http://code.jquery.com/ui/1.10.3/jquery-ui.js">
    </script>
    <link type="text/css" rel="Stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" />
    <script type="text/javascript">
    $(function () {

var availableItems = [{
    value: "recent",
    label: "Recent",
    classN: "heading"
}, {
    value: "all",
    label: "All",
    classN: "all"
}, {
    value: "lorem",
    label: "Lorem",
    classN: "lorem"
}, ];

$(".post-to").autocomplete({
    source: availableItems,
    minLength: 0,
    focus: function (event, ui) {
        $('.post-to').val(ui.item.label);
        alert(ui.item.label);
        return false;
    },
    select: function (event, ui) {
        alert(ui.item.label);
        return false;
    }
}).on("focus", function () {
    $(this).autocomplete("search", '');
}).data("ui-autocomplete")._renderItem = function (ul, item) {
        return $("<li></li>")
            .data("item.autocomplete", item)
            //instead of <span> use <a>
            .append("<a class='" + item.classN + "'></a><a>" + item.label + "</a>")
            .appendTo(ul);
};
});
    </script>