JS請求服務器時間

var date = new Date($.ajax({
        async: false
    }).getResponseHeader("Date"));

    var bombay = date + (3600000 * 8);

    var time = new Date(bombay);

    var outtime = new Date()

    outtime = outtime.getTime / 1000

    var currenttime = time.getTime(); //當前的時間戳
    currenttime = currenttime / 1000

    var newtime = new Date(Date.UTC(2017, 6, 11, 14, 0, 0)) // 開始的時間戳

    var jiezhitime = new Date(Date.UTC(2017, 6, 11, 14, 9, 0))
        // var newnewtime = new Date(newtime)
    newtime = newtime.getTime() / 1000
    jiezhitime = jiezhitime.getTime() / 1000



    console.log(newtime + '開始時間')

    console.log(jiezhitime + '截止時間')

    console.log('當前時間' + currenttime)


    setInterval(function() {

        if (currenttime >= newtime) {
            // console.log('到達時間')
            console.log('活動開始')
          	
        } else {
            // console.log('未到達')

            console.log('活動未開始')
            currenttime = currenttime + 1
            var a = timehtmlapp(newtime - currenttime)
            console.log('距離活動開始還有' + a)

        }
    }, 1000)



    function timehtmlapp(value) {
        var theTime = parseInt(value); // 秒
        var theTime1 = 0; // 分
        var theTime2 = 0; // 小時
        if (theTime > 60) {
            theTime1 = parseInt(theTime / 60);
            theTime = parseInt(theTime % 60);
            if (theTime1 > 60) {
                theTime2 = parseInt(theTime1 / 60);
                theTime1 = parseInt(theTime1 % 60);
            }
        }
        var result = "" + parseInt(theTime) + "秒";
        if (theTime1 > 0) {
            result = "" + parseInt(theTime1) + "分" + parseInt(theTime) + "秒";
        }
        if (theTime2 > 0) {
            result = "" + parseInt(theTime2) + "小時" + parseInt(theTime1) + '分' + parseInt(theTime) + '秒';
        }
        return result;
    }
    </script>