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JavaScript to achieve effective time control

Source: Internet
Author: User
Tags getdate set time
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  This article mainly introduces the control of using JavaScript to implement effective time, and displays the time sample code that will expire. Need friends can come to the reference, I hope to help you.

JavaScript implementation of a set time validity, the sense of the implementation of their own jquery code is too concise, this is a colleague to write a section of JS code, their own research to learn a bit     code as follows: <! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd "> <html xmlns=" http://www.w3.org/1999/xhtml "> <head> <meta http-equiv=" Content-type "content=" text/html; Charset=utf-8 "/> <title> Untitled document </title> <style type=" Text/css "> #lastdate {color: #FF9900; Font-style:normal;} </style>   </head> <body> <div class= "f-c" >           <select id= "Date_sel" name= "period" class= "Buyconqc select150" >                   &NB Sp        <option value= "0" > One day </option>               &NB Sp            <option value= "1" > Two days </option>           &NB Sp               <option value= "2" > Three days </option>                 &NB Sp          <option value= "3" > Four days </option>             ;/select>         <span class= "postaction" > in  <em id= "Lastdate" >2012-9-28</ After em>  , will expire </span>           </div>  <script type= "Text/javascript" >       document.getElementById (' Date_sel '). onchange = function () {        var time = new Date ();         var pre_year = Time.getfullyear ();         var pre_month = Time.getmonth ();         var pre_day = Time.getdate ();         var sel_day = parseint (document.getElementById (' Date_sel '). Value);         switch (sel_day) {            Case 0:pre_day +=1;break;             case 1:pre_day +=2;break;             case 2:pre_day +=3;break;             case 3:pre_day +=4;break;             Default:pre_day +=1;break; }     var endtime = new Date (pre_year, Pre_month, Pre_day);     document.getElementById (' lastdate '). InnerHTML = Endtime.getfullyear () + "-" + (Endtime.getmonth () +1) + "-" +endtime.getdate (); };  </script> </body> </html>  

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