JavaScript date format (JS dates formatted)

Method One:

An extension to date that converts date to a string of the specified format
The month (m), Day (d), hour (h), Minute (m), second (s), quarter (q) can be used with 1-2 placeholders,
Year (y) can use 1-4 placeholders, milliseconds (S) with only 1 placeholders (1-3 digits)
Example:
(New Date ()). Format ("Yyyy-mm-dd hh:mm:ss. S ") ==> 2006-07-02 08:09:04.423
(New Date ()). Format ("yyyy-m-d h:m:s.s") ==> 2006-7-2 8:9:4.18
Date.prototype.Format = function (FMT) {//author:meizz
var o = {
"m+": This.getmonth () + 1,//month
"D+": this.getdate (),//day
"H +": this.gethours (),//hour
"m+": this.getminutes (),//min
"S+": This.getseconds (),//sec
"q+": Math.floor ((This.getmonth () + 3)/3),//Quarterly
"S": this.getmilliseconds ()//MS
};
if (/(y+)/.test (FMT)) FMT = Fmt.replace (regexp.$1, (this.getfullyear () + ""). substr (4-regexp.$1.length));
For (var k in O)
if (New RegExp ("(" + K + ")"). Test (FMT)) FMT = Fmt.replace (regexp.$1, (regexp.$1.length = = 1)? (O[k]): (("XX" + o[k]). substr (("" + O[k]).));
return FMT;
}

Call:

var time1 = new Date (). Format ("Yyyy-mm-dd"); var time2 = new Date (). Format ("Yyyy-mm-dd HH:mm:ss");

Method Two:

<script language= "javascript" type= "Text/javascript" >
<!--/** * Extension to date, converts date to a specified format of string * months (M), Day (d), 12 hours (h), 24 hours (h), minutes (m), seconds (s), Weeks (E), quarter (Q)
You can use 1-2 placeholders * year (y) to use 1-4 placeholders, milliseconds (S) can only use 1 placeholders (1-3 digits) * Eg: * (new
Date ()). Pattern ("Yyyy-mm-dd hh:mm:ss. S ") ==> 2006-07-02 08:09:04.423
* (New Date ()). Pattern ("Yyyy-mm-dd E HH:mm:ss") ==> 2009-03-10 II 20:09:04
* (New Date ()). Pattern ("Yyyy-mm-dd EE hh:mm:ss") ==> 2009-03-10 Tuesday 08:09:04
* (New Date ()). Pattern ("Yyyy-mm-dd EEE hh:mm:ss") ==> 2009-03-10 Tuesday 08:09:04
* (New Date ()). Pattern ("yyyy-m-d h:m:s.s") ==> 2006-7-2 8:9:4.18
*/
Date.prototype.pattern=function (FMT) {
var o = {
"m+": This.getmonth () +1,//month
"D+": this.getdate (),//day
"H +": this.gethours ()%12 = = 0? 12:this.gethours ()%12,//hour
"H +": this.gethours (),//hour
"m+": this.getminutes (),//min
"S+": This.getseconds (),//sec
"q+": Math.floor ((This.getmonth () +3)/3),//Quarterly
"S": this.getmilliseconds ()//MS
};
var week = {
"0": "/u65e5",
"1": "/u4e00",
"2": "/u4e8c",
"3": "/u4e09",
"4": "/u56db",
"5": "/u4e94",
"6": "/U516D"
};
if (/(y+)/.test (FMT)) {
Fmt=fmt.replace (Regexp.$1, (this.getfullyear () + ""). substr (4-regexp.$1.length));
}
if (/(e+)/.test (FMT)) {
Fmt=fmt.replace (regexp.$1, (regexp.$1.length>1)? (regexp.$1.length>2?) "/u661f/u671f": "/u5468"): "") +week[this.getday () + ""]);
}
For (var k in O) {
if (New RegExp ("(" + K + ")"). Test (FMT)) {
FMT = Fmt.replace (regexp.$1, (regexp.$1.length==1)? (O[k]): (("XX" + o[k]). substr (("" + O[k]).));
}
}
return FMT;
}

var date = new Date ();
Window.alert (Date.pattern ("Yyyy-mm-dd hh:mm:ss"));
-
</script>

Method Three:

Date.prototype.format = function (mask) {
var d = this;

var zeroize = function (value, length) {

if (!length) length = 2;

Value = String (value);

for (var i = 0, zeros = "; I < (length-value.length); i++) {

Zeros + = ' 0 ';

}

return zeros + value;

};

return Mask.replace (/"[^"]* "|" [^ ']* ' |/b (?: D {
1, 4
} | m {
1, 4
} | YY (?: yy)? | ([HHMSTT])/1? | [LLZ]) /b/g, function ($) {

Switch ($) {

Case ' d ':
return D.getdate ();

Case ' DD ':
Return Zeroize (D.getdate ());

Case ' DDD ':
return [' Sun ', ' Mon ', ' Tue ', ' Wed ', ' Thr ', ' Fri ', ' Sat '][d.getday ()];

Case ' dddd ':
return [' Sunday ', ' Monday ', ' Tuesday ', ' Wednesday ', ' Thursday ', ' Friday ', ' Saturday '][d.getday ()];

Case ' M ':
return D.getmonth () + 1;

Case ' MM ':
Return Zeroize (D.getmonth () + 1);

Case ' MMM ':
return [' Jan ', ' Feb ', ' Mar ', ' Apr ', ' may ', ' June ', ' Jul ', '][d.getmonth ', ' Sep ', ' Oct ', ' Nov ', ' Dec ' ()];

Case ' MMMM ':
return [' January ', ' February ', ' March ', ' April ', ' may ', ' June ', ' July ', ' August ', ' September ', ' October ', ' November ', ' Dec Ember '][d.getmonth ()];

Case ' yy ':
Return String (D.getfullyear ()). substr (2);

Case ' yyyy ':
return D.getfullyear ();

Case ' H ':
Return d.gethours ()% 12 | | 12;

Case ' hh ':
Return Zeroize (d.gethours ()% 12 | | 12);

Case ' H ':
return d.gethours ();

Case ' HH ':
Return Zeroize (D.gethours ());

Case ' m ':
return D.getminutes ();

Case ' mm ':
Return Zeroize (D.getminutes ());

Case ' s ':
return D.getseconds ();

Case ' SS ':
Return Zeroize (D.getseconds ());

Case ' l ':
Return Zeroize (D.getmilliseconds (), 3);

Case ' L ':
var m = d.getmilliseconds ();

if (M > a) m = Math.Round (M/10);

Return Zeroize (m);

Case ' TT ':
Return D.gethours () < 12? ' Am ': ' PM ';

Case ' TT ':
Return D.gethours () < 12? ' AM ': ' PM ';

Case ' Z ':
Return d.toutcstring (). Match (/[a-z]+$/);

Return quoted strings with the surrounding quotes removed

Default
Return $0.substr (1, $0.length-2);

}

});

}; transfer from http://www.cnblogs.com/zhangpengshou/archive/2012/07/19/2599053.html

JavaScript date format (JS dates formatted)