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js acquisition date: the day before yesterday, yesterday, today, tomorrow, the day after tomorrow - Liehuo.Net</ title> <br></head> <br><br><body> <br><script language="JavaScript" type="text/javascript"> <br>function GetDateStr(AddDayCount) { <br>var dd = new Date(); <br>dd.setDate(dd.getDate() AddDayCount);//Get the date after AddDayCount days <br>var y = dd.getFullYear(); <br>var m = dd.getMonth() 1;//Get the date of the current month <br>var d = dd.getDate(); <br>return y "-" m "-" d; <br>} <br>document.write ("The day before yesterday:" GetDateStr(-2)); <br>document.write("<br />Yesterday:" GetDateStr(-1)); <br>document.write("<br /> Today: " GetDateStr(0)); <br>document.write("<br />Tomorrow: " GetDateStr(1)); <br>document.write("<br />The day after tomorrow: " GetDateStr (2)); <br>document.write("<br />Day after tomorrow:" GetDateStr(3)); <br></script> <br><br></body> <br> <ml> <br>
</div> <br>One of the methods is: Date.parse(dateVal). This function is powerful, but it has a fatal shortcoming, that is, it does not support our commonly used "year-month- "Day" format, short dates can use "/" or "-" as the date separator, but must be expressed in month/day/year format, such as "7/20/96". <br><br>Another method is to use split, such as: <br><div class="codetitle">
<span><a style="CURSOR: pointer" data="43752" class="copybut" id="copybut43752" onclick="doCopy('code43752')"><u>Copy the code</u></a></span> The code is as follows:</div>
<div class="codebody" id="code43752"> <br>var dtStr = "2006-11-25"; <br>var dtArr = dtStr.split("-"); <br>var dt = new Date(dtArr[0], dtArr[1], dtArr [2]); <br>
</div> <br>However, this method is relatively rigid and requires a fixed date format. It should only be used when there is no other way. <br><br>If we can separate the year, month and day, we should try to separate them. For example, ASP outputs the year, month and day separately. Then use new Date to process it, and the date type will be returned. <br><br>Date formatting<br><div class="codetitle">
<span><a style="CURSOR: pointer" data="21725" class="copybut" id="copybut21725" onclick="doCopy('code21725')"><u>Copy code</u></a></span> The code is as follows:</div>
<div class="codebody" id="code21725"> <br><script language="javascript" type="text/javascript"><!-- <BR>/**<BR>* Extension of Date, convert Date into String in specified format <BR>* Month (M), day (d), 12 hours (h), 24 hours (H), minutes (m), seconds ( s), week (E), quarter (q) can use 1-2 placeholders <BR>* year (y) can use 1-4 placeholders, milliseconds (S) can only use 1 placeholder symbol (is a number of 1-3 digits) <BR>* eg: <BR>* (new Date()).pattern("yyyy-MM-dd hh:mm:ss.S") ==> 2006- 07-02 08:09:04.423 <br>* (new Date()).pattern("yyyy-MM-dd E HH:mm:ss") ==> 2009-03-10 Tuesday 20:09:04 <br>* (new Date()).pattern("yyyy-MM-dd EE hh:mm:ss") ==> 2009-03-10 Tuesday 08:09:04 <br>* (new Date( )).pattern("yyyy-MM-dd EEE hh:mm:ss") ==> 2009-03-10 Tuesday 08:09:04 <br>* (new Date()).pattern("yyyy- M-d h:m:s.S") ==> 2006-7-2 8:9:4.18 <br>*/ <br>Date.prototype.pattern=function(fmt) { <br>var o = { <br>"M " : this.getMonth() 1, //Month<br>"d " : this.getDate(), //Day<br>"h " : this.getHours() == 0 ? 12: this.getHours(), //Hours<br>"H ": this.getHours(), //Hours<br>"m " : this.getMinutes(), //Minutes<br>"s " : this.getSeconds(), //Seconds<br>"q " : Math.floor((this.getMonth() 3)/3), //Quarter<br>"S" : this.getMilliseconds() / /ms<br>}; <br>var week = { <br>"0" : "u65e5", <br>"1" : "u4e00", <br>"2" : "u4e8c", <br> "3" : "u4e09", <br>"4" : "u56db", <br>"5" : "u4e94", <br>"6" : "u516d" <br>}; <br>if( /(y )/.test(fmt)){ <br>fmt=fmt.replace(RegExp.$1, (this.getFullYear() "").substr(4 - RegExp.$1.length)); <br> } <br>if(/(E )/.test(fmt)){ <br>fmt=fmt.replace(RegExp.$1, ((RegExp.$1.length>1) ? (RegExp.$1.length>2 ? "u661fu671f" : "u5468") : "") week[this.getDay() ""]); <br>} <br>for(var k in o){ <br>if(new RegExp("( " k ")").test(fmt)){ <br>fmt = fmt.replace(RegExp.$1, (RegExp.$1.length==1) ? (o[k]) : (("00" o [k]).substr(("" o[k]).length))); <br>} <br>} <br>return fmt; <br>} <br><br>var date = new Date (); <br>window.alert(date.pattern("yyyy-MM-dd hh:mm:ss")); <br>// --></script> <br>
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