$("#main").on("submit", "#searchForm", function (event) {
        event.preventDefault();
        $.ajax({
            url: "search.php",
            method: "POST",
            data: $(this).serialize(),
            dataType: 'json',
            success: function (response) {
                $("#queryArea").text(response.query);
                $("#numberDocuments").html(response.numberDocuments);
                $("#foundDocuments").html("");
                for (var key in response.found) {
                    $("#foundDocuments").append(response.found[key] + '<br>');
                }
            },
            error: function (xhr, status, error) {
                console.log(error);
                console.log(xhr.responseText);
                alert(status);
            }
        });
    });