一、Date日期对象
1、Date对象：日期对象用于处理日期和时间
2、获得当日的日期
3、常用方法：
getFullYear():获取年份
getTime():获取毫秒
setFullYear():设置具体的日期
getDay():获取星期
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> </head> <body> <script> var date = new Date(); // document.write(date); // document.write(date.getFullYear()); // document.write(date.getTime()); date.setFullYear(2012,1,1); document.write(date); </script> </body> </html>
4、时钟实例
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body onload="startTime()">
<script>
function startTime(){
var today = new Date();
var h = today.getHours();
var m = today.getMinutes();
var s = today.getSeconds();
m = checkTime(m);
s = checkTime(s);
document.getElementById("timetxt").innerHTML = h+":"+m+":"+s;
t = setTimeout(function(){
startTime();
},500);
}
function checkTime(i){
if(i<10){
i = "0" + i;
}
return i;
}
</script>
<div id="timetxt"></div>
</body>
</html>原文：http://11317783.blog.51cto.com/11307783/1793793