JavaScript实现网页倒计时的完整代码与调用方法

JavaScript倒计时代码实现与调用

JavaScript脚本示例：

 
<script language="javascript" type="text/javascript">
var interval = 1000;
function ShowCountDown(year, month, day, divname) {
var now = new Date();
var endDate = new Date(year, month - 1, day, 14, 07);
var leftTime = endDate.getTime() - now.getTime();
var leftsecond = parseInt(leftTime / 1000);
var day1 = Math.floor(leftsecond / (60 * 60 * 24));
var hour1 = Math.floor((leftsecond - day1 * 24 * 60 * 60) / 3600);
var hour = Math.floor((leftsecond - 60 * 60) / 3600);
//若小时数为负则置零
if (hour > 0) {
} 
else {
hour = 0;
} 
if (day1 < 0) {
hour = hour1
} 
var minute = Math.floor((leftsecond - day1 * 24 * 60 * 60 - hour1 * 3600) / 60);
var second = Math.floor(leftsecond - day1 * 24 * 60 * 60 - hour1 * 3600 - minute * 60);
var cc = document.getElementById(divname);
//若结束时间已过则显示零值
if (leftTime > 0) {
cc.innerHTML = hour + "小时" + minute + "分" + second + "秒";
//如需显示年份请取消注释
//cc.innerHTML = "距离" + year + "年" + month + "月" + day + "日还有：" + hour + "小时" + minute + "分" + second + "秒";
} 
else {
cc.innerHTML = 0 + "小时" + 0 + "分" + 0 + "秒";
} 
} 
//showData为DIV元素ID，2010、8、10分别代表年月日，参数可按需调整。
window.setInterval(function () { ShowCountDown(2010, 8, 10, 'showData'); }, interval);
</script>

在需展示倒计时的位置插入以下代码：

 
<div id="showData">
</div>