小巧实用js倒计时

<script type="text/javascript">

var intDiff = parseInt(15); //倒计时总秒数量

function timer(intDiff) {

index = window.setInterval(function () {

var day = 0,

hour = 0,

minute = 0,

second = 0; //时间默认值

if (intDiff > 0) {

day = Math.floor(intDiff / (60 * 60 * 24));

hour = Math.floor(intDiff / (60 * 60)) - (day * 24);

minute = Math.floor(intDiff / 60) - (day * 24 * 60) - (hour * 60);

second = Math.floor(intDiff) - (day * 24 * 60 * 60) - (hour * 60 * 60) - (minute * 60);

}

if (minute <= 9) minute = ‘0‘ + minute;

if (second <= 9) second = ‘0‘ + second;

$(‘#day_show‘).html(day + "天");

$(‘#hour_show‘).html(‘<s id="h"></s>‘ + hour + ‘时‘);

$(‘#minute_show‘).html(‘<s></s>‘ + minute + ‘分‘);

$(‘#second_show‘).html(‘<s></s>‘ + second + ‘秒‘);

intDiff--;

if (day == 0 && hour == 0 && minute == 0 && second == 0) {

clearInterval(index);

}

}, 1000);

}

$(function () {

timer(intDiff);

});

</script>

html

<h1>网页上的倒计时</h1>

<div class="time-item">

<span id="day_show">0天</span>

<strong id="hour_show">0时</strong>

<strong id="minute_show">0分</strong>

<strong id="second_show">0秒</strong>

</div>

css

<style>

h1 {

font-family:"微软雅黑";

font-size:40px;

margin:20px 0;

border-bottom:solid 1px #ccc;

padding-bottom:20px;

letter-spacing:2px;

}

.time-item strong {

background:#C71C60;

color:#fff;

line-height:49px;

font-size:36px;

font-family:Arial;

padding:0 10px;

margin-right:10px;

border-radius:5px;

box-shadow:1px 1px 3px rgba(0,0,0,0.2);

}

#day_show {

float:left;

line-height:49px;

color:#c71c60;

font-size:32px;

margin:0 10px;

font-family:Arial,Helvetica,sans-serif;

}

.item-title .unit {

background:none;

line-height:49px;

font-size:24px;

padding:0 10px;

float:left;

}

</style>