engelsystem/frontend/js/moment-countdown.js

/*
 * Initialize all moment countdowns on the page. A moment countdown has the
 * class "moment-countdown" and the attribute "data-timestamp" which defines the
 * countdown's time goal.
 */
$(document).ready(function () {
    if (typeof moment !== "undefined") {
        $.each($(".moment-countdown"), function (i, e) {
            var span = $(e);
            var text = span.html();
            /* global moment */
            var timestamp = moment(parseInt(span.attr("data-timestamp") * 1000));
            span.html(text.replace("%c", timestamp.fromNow()));
            setInterval(function () {
                span.html(text.replace("%c", timestamp.fromNow()));
            }, 1000);
        });
    }
});