JavaScript对下一个元旦倒计时,经常用于网店限时销售

<div>距离下一个元旦还有多久:</div>
<div id="timer"></div>

<script type="text/javascript">
		
		function nextTime(){
			var now = new Date();
			//距离下一个元旦还有多久
			var end = new Date(now.getFullYear() + 1,0,1);
			//两个时间差
			var time = end.getTime() - now.getTime();
			//转换成秒
			var sec = time/1000;
			//转换成天
			var day = Math.floor(sec/60/60/24);
			//转换成时
			var hour = sec/60/60;
			//转换成分
			var min = sec/60;
			
			var lhour = Math.floor(hour % 24);
			var lmin = Math.floor(min % 60);
			var lsec = Math.floor(sec % 60);
			
			document.getElementById("timer").innerHTML = day +"天" + lhour + "时" + lmin +"分" + lsec + "秒";
			
		}
		
		setInterval(nextTime,1000);
	</script>