本文实例为大家分享了js倒计时效果的具体代码，供大家参考，具体内容如下
Index.html
<!DOCTYPE html >
<html>
<head>
<title>倒计时</title>
<style type="text/css">
.colockbox
{
width:500px;
height:20px;
color:#000000;
}
.colockbox span
{
float:left;display:block;
width:20px;
height:20px;
line-height:20px;
font-size:18px;
font-weight:bold;
text-align:center;
color:#ffffff;
text-indent:3px;
}
.square
{
float:left;
width:26px;
height:20px;
background-color:#222222;
border-radius:3px;
padding:0px;
margin-right:5px;
}
</style>
<script type="text/javascript" src="jquery-1.11.3.js"></script>
<script type="text/javascript">
$(function(){
countDown("2016/12/25 23:00:00","#colockbox1");
});
function countDown(time,id){
var day_elem = $(id).find('.day');
var hour_elem = $(id).find('.hour');
var minute_elem = $(id).find('.minute');
var second_elem = $(id).find('.second');
var end_time = new Date(time).getTime(),//月份是实际月份-1
sys_second = (end_time-new Date().getTime())/1000;
var timer = setInterval(function(){
if (sys_second > 1) {
sys_second -= 1;
var day = Math.floor((sys_second / 3600) / 24);
var hour = Math.floor((sys_second / 3600) % 24);
var minute = Math.floor((sys_second / 60) % 60);
var second = Math.floor(sys_second % 60);
day_elem && $(day_elem).text(day);//计算天
$(hour_elem).text(hour<10?"0"+hour:hour);//计算小时
$(minute_elem).text(minute<10?"0"+minute:minute);//计算分钟
$(second_elem).text(second<10?"0"+second:second);//计算秒杀
} else {
clearInterval(timer);
}
}, 1000);
}
</script>
</head>
<body>
<div class="colockbox" id="colockbox1">
<div class="square">
<span class="day">00</span>
</div>
<span style="color:gray;font-size:15px; float:left;">天</span>
<div class="square">
<span class="hour">00</span>
</div>
<span style="color:gray;font-size:15px; float:left;">时</span>
<div class="square">
<span class="minute">00</span>
</div>
<span style="color:gray;font-size:15px; float:left;">分</span>
<div class="square">
<span class="second">00</span>
</div>
<span style="color:gray;font-size:15px; float:left;">秒</span>
</div>
</body>
</html>
运行结果如图:
