js倒计时

1.第一种

//退订倒计时
            timeOut:function(nowDay,endDay){

var timeLeave = (endDay - nowDay) / 1000,

interval = 0;

interval = setInterval(function() {

intervalTime();

}, 1000);

function intervalTime() {

var J_day = $(".J-day"),

J_hour = $(".J-hour"),

J_minute = $(".J-minute"),

J_second = $(".J-second");

if (timeLeave > 0) {

var day = Math.floor(timeLeave / (24 * 60 * 60)),

hour = Math.floor(timeLeave % (24 * 60 * 60) / (60 * 60)),

minute = Math.floor(timeLeave % (24 * 60 * 60) % (60 * 60) / 60),

second = Math.floor(timeLeave % (24 * 60 * 60) % (60 * 60) % 60);

J_day.html(day);
                        J_hour.html(hour);
                        J_minute.html(minute);
                        J_second.html(second);

timeLeave--;

} else {

clearInterval(interval);

J_day.html("0");
                        J_hour.html("0");
                        J_minute.html("0");
                        J_second.html("0");

$(".J-to-tip").html("请尽快填写退货物流信息，方便商家为您处理退款");

}

}

}

2.第二种

(function($) {

function TimeOut(endDay) {
        var tDay = new Date(),
            //yearNow = tDay.getFullYear(),
            //dayNow = tDay.getDate(),
            //endDay = new Date(yearNow, 10, dayNow+6, 23, 59, 59)
            timeLeave = (endDay - tDay) / 1000;
        var day = Math.floor(timeLeave / (24 * 60 * 60)),
            hour = Math.floor(timeLeave % (24 * 60 * 60) / (60 * 60)),
            minute = Math.floor(timeLeave % (24 * 60 * 60) % (60 * 60) / 60),
            second = Math.floor(timeLeave % (24 * 60 * 60) % (60 * 60) % 60);

$(".J-day").html(day);
        $(".J-hour").html(hour);
        $(".J-minute").html(minute);
        $(".J-second").html(second);
    }

var dayNow = new Date(2015,11,25,08,00,00),
        yearNow = dayNow.getFullYear(),
        monthNow = dayNow.getMonth(),
        dayNow = dayNow.getDate(),
        endDay = new Date(yearNow, monthNow, dayNow + 10, 23, 59, 59);
    console.log(endDay.getTime());
    setInterval(function() {
        TimeOut(endDay);
    }, 1000);

})(jQuery);