JavaScript date formatting the use of format functions _javascript tips

Objective

JavaScript date formatting is common in everyday development, so let's share two examples of how to use the JavaScript time format function.

Method One

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,//hr "h+": this.gethours (),//hr "m+": this.getminutes (),//min "s+": This.getseconds ()  
 ,//sec "q+": Math.floor (This.getmonth () +3)/3),//Quarter "S": this.getmilliseconds ()//millisecond}; var week = {"0": "/u65e5", "1": "/u4e00", "2": "/u4e8c", "3": "/u4e09", "4": "/u56db", "5": "/u4e  
 "", "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>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]): (("+ o[k]"). substr (("" + o[k). length)); }} RetuRN FMT;  }

Call method

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

Method Two:

An extension to date that converts date to a string
/month (M) in the specified format, days (d), hours (h), minutes (M), seconds (s), quarter (q) can be used in 1-2 placeholders, 
//year (Y) can be 1-4 placeholders, milliseconds (s) can only be 1 Placeholder (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) { 
 var o = {
 "m+": t His.getmonth () + 1,//month 
 "d+": this.getdate (),//day 
 "h+": this.gethours (),//hr 
 "m+": this.getminutes (),/ /Sub 
 "S+": This.getseconds (),//sec 
 "q+": Math.floor ((This.getmonth () + 3)/3),//quarter 
 "s": This.getmilliseconds ()//Millisecond 
 };
 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]): (("+ o[k]"). substr (("" + o[k). length));
 return FMT;
}

Call Method:

 var haorooms1 = new Date (). Format ("Yyyy-mm-dd");

 var haorooms2= new Date (). Format ("Yyyy-mm-dd hh:mm:ss");

 alert (HAOROOMS1); alert (HAOROOMS2);

Summarize

The above is the whole story of this article, the above two methods from the network, verified testing are available, but also more convenient, everyone in use, you can package it, in your function, direct call on it, these two time format function method is better! I hope to help you with your study or work. If you have questions, you can exchange messages.