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);
        });
    }
});