?? ?? ??
Date ?? ??
JavaScript?? Date ??? ??? ??? ???? ? ?????.
?? ??? ??? ???? ??? ?????.
var now = new Date(); now; // Wed Jun 24 2015 19:49:22 GMT+0800 (CST) now.getFullYear(); // 2015, 年份 now.getMonth(); // 5, 月份，注意月份范圍是0~11，5表示六月 now.getDate(); // 24, 表示24號(hào) now.getDay(); // 3, 表示星期三 now.getHours(); // 19, 24小時(shí)制 now.getMinutes(); // 49, 分鐘 now.getSeconds(); // 22, 秒 now.getMilliseconds(); // 875, 毫秒數(shù) now.getTime(); // 1435146562875, 以number形式表示的時(shí)間戳
?? ??? ????? ?? ?? ???? ?? ????? ???? ??? ??? ? ?? ??? ???? ?? ? ????. ?? ??? ?? ??? ?????.
??? ??? ???? Date ??? ????? ??? ??? ? ????.
var d = new Date(2015, 5, 19, 20, 15, 30, 123); d; // Fri Jun 19 2015 20:15:30 GMT+0800 (CST)
?? ???? ?, ? ? ??? ???? ? ????. JavaScript? 0~11? ??? ????, 0? 1?, 1? 2?? ????? 6?? ????? 5? ?????! ?? ??? ?? JavaScript ????? ??? ?? ?? ????? ??? ?? ??? ?? ??????.
??? ??? ??? ???? ? ?? ??? ISO 8601 ??? ???? ???? ?? ???? ????.
var d = Date.parse('2015-06-24T19:49:22.875+08:00');
d; // 1435146562875??? ?? Date ??? ?? ?????? ?????. ??? ?????? ?? ??? ?? ??? ? ????.
var d = new Date(1435146562875); d; // Wed Jun 24 2015 19:49:22 GMT+0800 (CST)
<html>
<body>
<script type="text/javascript">
var d=new Date();
document.write("從 1970/01/01 至今已過(guò)去 " + d.getTime() + " 毫秒");
</script>
</body>
</html>Time Zone
Date ??? ???? ??? ?? ???? ?? ?????. ??? ?? ??? ??? UTC ??? ?? ??? ? ????.
var d = new Date(1435146562875); d.toLocaleString(); // '2015/6/24 下午7:49:22'，本地時(shí)間（北京時(shí)區(qū)+8:00），顯示的字符串與操作系統(tǒng)設(shè)定的格式有關(guān) d.toUTCString(); // 'Wed, 24 Jun 2015 11:49:22 GMT'，UTC時(shí)間，與本地時(shí)間相差8小時(shí)
???? JavaScript?? ??? ??? ???? ??? ?????? ??? ?? ??? ?????? ???? ? ??? ??? ???? ? ??? ????. ?? ????? ?????? ?? ???? ???? ??? ? ????.
?????? ?????? ?????? 1970? 1? 1? 0? GMT ????? ????? ??? ?? ???? ?? ?? ?????. ????? ??? ???? ??? ????? ???? ? ?? ?? ???? ????? ???? ????? ??? ? ???? ??? ????. ??? ?????? ??? ???? ??? ? ??? ??? ??? ????. ???? ??.
??? ?????? ????? ???????? ?????? ?? JavaScript? ???? ?? ???? ????? ?? ???.
?? ?????? ???? ??? ?????:
if (Date.now) {
alert(Date.now()); // 老版本IE沒(méi)有now()方法
} else {
alert(new Date().getTime());
}<html>
<body>
<script type="text/javascript">
var d=new Date()
var weekday=new Array(7)
weekday[0]="星期日"
weekday[1]="星期一"
weekday[2]="星期二"
weekday[3]="星期三"
weekday[4]="星期四"
weekday[5]="星期五"
weekday[6]="星期六"
document.write("今天是" + weekday[d.getDay()])
</script>
</body>
</html>
