JavaScript ?? ??
JavaScript ?? ??
Date ??? ??? ??? ???? ? ?????. ??? ??? ???? ??? ??? ????.
var date_obj = new Date( arg )
arg? ??? ?? ???? ??? ?? ?????. ? ????? ???? Data ??? ???? ?? ??? ??? ????? ?????. arg ????? ???? Date ??? ?? ? ?? ?? ??? ?? ????. ???? ????? ??? ????.
arg ???? ??:
???? ?? ???? ?? ? ?
??? ?? ??, 1970? ??? 1? 1? 0??? ? ????? ??? ? new Date( 1289403980906 )
datestring ???? ???? ?? ? ??, ??? ???? ???? 0:00???. Date( "Mar 04, 2012 22:15: 14" )
?, ? 4?? ??, 0-11? ?? 1?~12?? ?????. new Date(2012, 3)
?, ?, ? ? 1-31 ??? ?????. new ??( 2012, 3, 4 )
?, ?, ?, ?? ?? 0-23? ??? 24??? ?????. new ??( 2012, 3, 4, 22 )
?, ? , ?, ?, ? ? ? ?? ????? 0-59? ??????. new Date( 2012, 3, 4, 22, 15 )
?, ?, ?, ?, ?, ? ?? 0-59? ???? ??????. ? ? new Date( 2012, 3, 4, 22, 15, 14 )
year, ?, ?, ?, ?, ?, ????? ?????? ??? ?? ?? ?? ?? 0-999? ?????. new Date(2012, 3, 4, 22, 15, 14, 100)
?? ??
?? ??? ??? ??? ???? ? ?????.
?? ??? new ???? ?? ??? ? ????. ?? ??? myDate?? Date ??? ?????.
??? ????? ? ?? ??? ????.
new Date() // ?? ?? ? ??
new Date(milliseconds) // 1970? 1? 1??? 1970? 1? 1???? ?????. ?? ??? ?
new Date(dateString)
new Date(?, ?, ?, ?, ?, ?, ???)
? ???? ? ???? ???? ?? ?? ?? ????? 0???.
<p 1970???="" year="" 1="" ?="" ???? ?? 86,400,000???? ?????
?? ?????? ? ?? ?:
var today = new Date()
var d1 = new Date("1975? 10? 13? 11:13:00")
var d2 = new Date(79,5,24)
var d3 = new Date(79,5,24,11,33,0)
?? ??
?? ??? ???? ???? ??? ?? ??? ?? ??? ? ????.
?? ???? ?? ??? ?? ?? ??(2010? 1? 14?)? ??????.
var myDate=new Date();
myDate.setFullYear(2010,0,14)
In ?? ???? ?? ??? 5? ? ??? ?????.
var myDate=new Date();
myDate.setDate(myDate.getDate()+5);
??: ??? ???? ??? ??? ???? ?? ??? ???? ? ??? ?????.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文網(wǎng)(php.cn)</title>
<script type="text/javascript">
var d = new Date();
document.write("現(xiàn)在是：" + d);
</script>
</head>
<body>
</body>
</html>? ?? ??
Date ??? ???? ? ??? ??? ?? ????.
?? ??? ?? ??? 2100? 1? 14?? ?????.
var x=new Date();
x.setFullYear(2100,0,14);
var today = new Date() ;
if (x>today)
{
Alert("??? 2100? 1? 14? ?????");
}
else
{
Alert("??? 2100? 1? 14? ?????");
}
