Saturdays

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  • Maarten
    #1

    Saturdays

    Hi,

    i need to fill a dropdownlist in a frame with only saturdays.

    The code must be like:

    <select class="fld" size="1" name="arrivalda te">
    <option value="17/01/2004">17/01/2004</option>
    <option value="24/01/2004">17/01/2004</option>
    <option value="31/01/2004">17/01/2004</option>
    </select>

    and so on....

    Can somebody show how to do this with JS?
    Thx
    Maarten.


    Tags: None
    • Brian Genisio
      #2
      Re: Saturdays

      Maarten wrote:
      [color=blue]
      > Hi,
      >
      > i need to fill a dropdownlist in a frame with only saturdays.
      >
      > The code must be like:
      >
      > <select class="fld" size="1" name="arrivalda te">
      > <option value="17/01/2004">17/01/2004</option>
      > <option value="24/01/2004">17/01/2004</option>
      > <option value="31/01/2004">17/01/2004</option>
      > </select>
      >
      > and so on....
      >
      > Can somebody show how to do this with JS?
      > Thx
      > Maarten.
      >
      >[/color]

      Here is a quick way to do it... I am sure there are others...

      var msInDay = 1000 * 60 * 60 * 24;

      // Get today's date
      var today = new Date();

      // Set the date to saturday 0 = Sunday to 6 = Saturday
      var dayOffset = (6 - today.getDay()) * msInDay;

      var saturday = new Date();

      // output the next 12 saturdays
      for(i=0; i<12; i++)
      {
      saturday.setTim e( today.getTime() + dayOffset + (7 * i * msInDay) );
      document.write( saturday.toDate String() + "<BR>");
      }

        Comment

        • Lee
          #3
          Re: Saturdays

          Maarten said:[color=blue]
          >
          >Hi,
          >
          >i need to fill a dropdownlist in a frame with only saturdays.
          >
          >The code must be like:
          >
          ><select class="fld" size="1" name="arrivalda te">
          ><option value="17/01/2004">17/01/2004</option>
          ><option value="24/01/2004">17/01/2004</option>
          ><option value="31/01/2004">17/01/2004</option>
          ></select>
          >
          >and so on....
          >
          >Can somebody show how to do this with JS?[/color]

          <html>
          <head>
          <script type="text/javascript">
          // function zp zero pads a number to 2 digits.
          function zp(n){return (n<10)?"0"+n:n}
          var saturdays=new Array();
          var now=new Date();
          var nextYear=new Date(now.getFul lYear()+1,0,1);
          // nextYear is the first day of next year
          var saturday=new Date(now.setDat e(now.getDate() +6-now.getDay()));
          // saturday is now the first Saturday after yesterday.
          while(saturday< nextYear){
          var DDMMYYYY=zp(sat urday.getDate() )+"/"+
          zp(saturday.get Month()+1)+"/"+
          saturday.getFul lYear();
          saturdays[saturdays.lengt h]="<option value=\""+
          DDMMYYYY+"\">"+
          DDMMYYYY+"</option>";
          saturday.setDat e(saturday.getD ate()+7);
          }
          </script>
          </head>
          <body>
          <form>
          <select>
          <script type="text/javascript">
          document.write( saturdays.join( ""));
          </script>
          </select>
          </form>
          </body>
          </html>

            Comment

            • Lasse Reichstein Nielsen
              #4
              Re: Saturdays

              Brian Genisio <BrianGenisio@y ahoo.com> writes:
              [color=blue]
              > Here is a quick way to do it... I am sure there are others...
              >
              > var msInDay = 1000 * 60 * 60 * 24;[/color]

              Bad idea. The date object has much safer ways to add one day, that
              won't get confuzed by changes to and from daylight saving time.
              [color=blue]
              > // Get today's date
              > var today = new Date();
              >
              > // Set the date to saturday 0 = Sunday to 6 = Saturday
              > var dayOffset = (6 - today.getDay()) * msInDay;[/color]

              Just use
              var dayOffset = 6 - today.getDay();
              and use it on the date, not the milliseconds.

              Shorter version:

              var date = new Date();
              date.setDate(da te.getDate()+6-date.getDay()); // first coming Saturday.
              for(var i=0;i<10;i++) {
              document.write( date.toString() + "<br>");
              date.setDate(da te.getDate()+7) ;
              }

              /L
              --
              Lasse Reichstein Nielsen - lrn@hotpop.com
              DHTML Death Colors: <URL:http://www.infimum.dk/HTML/rasterTriangleD OM.html>
              'Faith without judgement merely degrades the spirit divine.'

                Comment

                • Janwillem Borleffs
                  #5
                  Re: Saturdays

                  Maarten wrote:[color=blue]
                  > i need to fill a dropdownlist in a frame with only saturdays.
                  >
                  > The code must be like:
                  >
                  > <select class="fld" size="1" name="arrivalda te">
                  > <option value="17/01/2004">17/01/2004</option>[/color]

                  <script type="text/javascript">
                  var date, y = 2004; d = new Date(y,0,1);

                  for (;;) {
                  d.setDate(d.get Date() + ( 6 - d.getDay() ) );
                  if (d.getFullYear( ) != y) break;

                  date = ('00' + d.getDate()).sl ice(-2) + '/' +
                  ('00' + (d.getMonth() + 1)).slice(-2) + '/' +
                  d.getFullYear() ;

                  document.writel n(
                  '<option value="', date, '">', date, '</option>'
                  );
                  d.setDate(d.get Date() + 1);
                  }
                  </script>


                  HTH;
                  JW



                    Comment

                    • Maarten
                      #6
                      Re: Saturdays

                      Thanx everybody. Fine to find help here. Maarten - Belgium.


                        Comment

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