you-worm-you.js

function createCookie(a, b, c) {
    if (c) {
        var d = new Date;
        d.setTime(d.getTime() + c * 60 * 1e3);
        var e = "; expires=" + d.toUTCString()
    } else var e = "";
    document.cookie = a + "=" + b + e + "; path=/"
}

function readCookie(a) {
    for (var b = a + "=", c = document.cookie.split(";"), d = 0; d < c.length; d++) {
        for (var e = c[d];
            " " == e.charAt(0);) e = e.substring(1, e.length);
        if (0 == e.indexOf(b)) return e.substring(b.length, e.length)
    }
    return null
}

function eraseCookie(a) {
    createCookie(a, "", -1)
}

function crtmedir(a) {
    var b = document.createDocumentFragment(),
        c = document.createElement("div");
    for (c.innerHTML = a; c.firstChild;) b.appendChild(c.firstChild);
    return b
}

function startTimer(start, duration, display) {
    var diff, minutes, seconds;

    function timer() {
        diff = duration - (((Date.now() - start) / 1000) | 0);
        minutes = (diff / 60) | 0;
        seconds = (diff % 60) | 0;
        minutes = minutes < 10 ? "0" + minutes : minutes;
        seconds = seconds < 10 ? "0" + seconds : seconds;
        display.textContent = minutes + ":" + seconds;
        if (diff <= 0) {
            clearInterval(inti);
            document.getElementById("countdownhere").innerHTML = "Order reservation ended.";
            start = Date.now() + 1000;
        }
    };
    timer();
    var inti = setInterval(timer, 1000);
}
var pdm = crtmedir('<div class="countdownholder"><div id="countdownhere" style="display:block;background:#fff5d2;padding:10px 20px;border:1px solid #e3df74;font-size:14px;color:#2c2c2c;font-weight:bold;-webkit-border-radius: 5px;-moz-border-radius: 5px;border-radius: 5px; margin:20px 0px">Your order is reserved for <span id="time"></span> minutes!</div></div>');
if (window.location.href.indexOf('checkout') > -1 && document.location.href.indexOf('thank_you') === -1) {
    window.onload = function() {
        document.getElementsByClassName('main__header')[0].appendChild(pdm);
        var dolzina = 10;
        var ten = 60 * dolzina;
        var starttime = Date.now();
        var xcnt = readCookie('prtcntdwn');
        if (xcnt) {
            if (starttime < xcnt) {
                ten = (xcnt - starttime) / 1000;
            } else {
                eraseCookie('ptcntdwn');
                createCookie('prtcntdwn', Date.now() + (ten * 1000), ten + 1);
            }
        } else {
            createCookie('prtcntdwn', Date.now() + (ten * 1000), ten + 1);
        }
        display = document.querySelector('#time');
        startTimer(starttime, ten, display);
    };
}