jquery autocomplete wqith array concept

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$(function() {
    var arrLinks = [
        {
        key: 1,
        url: "http://google.com",
        label: 'google'},
    {
        key: 2,
        url: "http://yahoo.com",
        title: "Yahoo",
        label: 'yahoo'},
    {
        key: 2,
        url: "http://microsoft.com",
        label: 'microsoft'}
    ];
    $("input[name=url]").autocomplete({
        source: arrLinks
    }).data("autocomplete")._renderItem = function(ul, item) {
        return $("<li>").data("item.autocomplete", item).append("<a>" + item.url + "</a>").appendTo(ul);
    };
});

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