$.getJSON('php/messages.json', callback);

function callback(respond) {
    var timeNow = Date.now();

    for (var i = 0; i < respond.length; i++) {
        var data = respond[i];

        if (exists.indexOf(data.id) != -1) continue;

        var timeInMessage = data.time * 1000;
        var diff_time = (timeNow - timeInMessage);

        if(diff_time <= 3600000) {
            var rowClone = $('.mess_hide').clone().removeClass('mess_hide');

            var newDate = new Date(timeInMessage);
            var dateArray = [newDate.getHours(), newDate.getMinutes(), newDate.getSeconds()]
            var res = dateArray.map(function (x) {
                return x < 10 ? "0" + x : x;
            }).join(":");

            $('#messages').append(rowClone);
            $('.time', rowClone).html(res);
            $('.name', rowClone).html(data.user);
            $('.message', rowClone).html(smile(data.message));
            $('.scroller').scrollTop($('#messages').height());

            exists.push(data.id);
        }
    }
    setTimeout(function() {$.getJSON('php/messages.json', callback);}, 1000);
}