倒计时 JS小例子
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<span class="cd_item_txt" id="days">00</span></div>
<div class="cd_item cd_hour" ><span class="cd_item_txt" id="hours">00</span></div>
<div class="cd_item cd_minute"><span class="cd_item_txt" id="minutes">00</span></div>
<div class="cd_item cd_second"><span class="cd_item_txt" id="seconds">00</span></div></div>
<script type="text/javascript" src="js/jquery-1.9.1.min.js">
function leftTimer(year,month,day,hour,minute,second){
var leftTime = (new Date(year,month-1,day,hour,minute,second)) - (new Date()); //计算剩余的毫秒数
// alert(leftTime);
var days = parseInt(leftTime / 1000 / 60 / 60 / 24 , 10); //计算剩余的天数
var hours = parseInt(leftTime / 1000 / 60 / 60 % 24 , 10); //计算剩余的小时
var minutes = parseInt(leftTime / 1000 / 60 % 60, 10);//计算剩余的分钟
var seconds = parseInt(leftTime / 1000 % 60, 10);//计算剩余的秒数
days = checkTime(days);
hours = checkTime(hours);
minutes = checkTime(minutes);
seconds = checkTime(seconds);
document.getElementById("days").innerhtml = days;
document.getElementById("seconds").innerHTML = seconds;
document.getElementById("minutes").innerHTML = minutes;
document.getElementById("hours").innerHTML = hours;
}
function checkTime(i){ //将0-9的数字前面加上0，例1变为01
if(i<10)
{
i = "0" + i;
}
return i;
}
//$seckill_time = ‘2018,04,04,10,00,00‘；
setInterval("leftTimer({$seckill_time})",1000); //在这里修改6个参数 ，根据后台传值
leftTimer();
<--秒杀时间js end-->