How to use 'link jquery google' in JavaScript

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function searchGoogle(searchTerm, func) {
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    var link = "https://www.google.com/search?q=" + searchTerm;
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    var promise = util.ajaxPromise(link);
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    function handleLink(link) {
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        if (link) {
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            var id = background.util().getParameterByName("v", link);
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            if (id && id != "") {
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                func(true, id);
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                return true;
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            }
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        }
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        return false;
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    }
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    promise.then(function (result) {
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        var doc = util.getDocFromHTML(result),
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            mainLink = doc.find(".twQ0Be a"),
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            links = doc.find("cite.iUh30"),
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            link;
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        if (mainLink.length > 0) {
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            link = mainLink.attr('href');
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            if (handleLink(link)) {
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                return;
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            }
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        }
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        if (links.length > 0) {
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            for (var i = 0; i < links.length; i++) {
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                link = $(links[i]).html();
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                if (handleLink(link)) {
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                    return;
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                }
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            }
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        }
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        func(false);
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    }).catch(function (error) {
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        func(false, error);
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    });
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}