<!DOCTYPE html >
<html>
<head>
<title></title>
</head>
<body>
<span></span>
<script>
function counter() {
var date = new Date();
var year = date.getFullYear();
var date2 = new Date(year, 12, 31, 23, 59, 59);
var time = (date2 - date) / 1000;
var day = Math.floor(time / (24 * 60 * 60));
var hour = Math.floor(time % (24 * 60 * 60) / (60 * 60));
var minute = Math.floor(time % (24 * 60 * 60) % (60 * 60) / 60);
var second = Math.floor(time % (24 * 60 * 60) % (60 * 60) % 60);
var str = year + "年还剩" + day + "天" + hour + "时" + minute + "分"
+ second + "秒";
document.getElementsByTagName("span")[0].innerHTML = str;
}
setInterval(counter(), 500);
</script>
</body>
</html>
