计算时差
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>计算时差</title>
<script src="jquery.js"></script>
</head>
<body>
<div id="elapseClock"></div>
<script>
function timeElapse(date) {
var current = Date();
var seconds = (Date.parse(current) - Date.parse(date)) / 1000;
var days = Math.floor(seconds / (3600 * 24));
seconds = seconds % (3600 * 24);
var hours = Math.floor(seconds / 3600);
if (hours < 10) {
hours = "0" + hours;
}
seconds = seconds % 3600;
var minutes = Math.floor(seconds / 60);
if (minutes < 10) {
minutes = "0" + minutes;
}
seconds = seconds % 60;
if (seconds < 10) {
seconds = "0" + seconds;
}
var result = "<span class=\"digit\">" + days + "</span> days <span class=\"digit\">" + hours + "</span> hours <span class=\"digit\">" + minutes + "</span> minutes <span class=\"digit\">" + seconds + "</span> seconds";
$("#elapseClock").html(result);
}
var together = new Date();
together.setFullYear(2013, 2, 28);
together.setHours(20);
together.setMinutes(0);
together.setSeconds(0);
together.setMilliseconds(0);
timeElapse(together);
//设置定时器，页面时间定时更新
setInterval(function () {
timeElapse(together);
}, 500);
</script>
</body>
</html>