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Thread: multiple use datetime script

  1. #1
    Join Date
    Dec 2008
    Posts
    42

    multiple use datetime script

    Hi all,

    I'm using a small javascript which counts the time since a particular datetime value. I can use the script once on the page, but if i try and access it a second time it doesn't work. What i mean is:

    The script in <body> is:

    Code:
    <script language="JavaScript">
     TargetDate = "06/20/2013 00:00:01";
     FinishMessage = "done"
     BackColor = "white";
     ForeColor = "black";
     CountActive = true;
     LeadingZero = true;
     DisplayFormat = "%%D%% Days %%H%%:%%M%%:%%S%% ";
     </script>
    <script type="text/javascript"  language="JavaScript" src="time.js"></script>
    time.js is

    Code:
    <script>function calcage(secs, num1, num2) {
      s = ((Math.floor(secs/num1))%num2).toString();
      if (LeadingZero && s.length < 2)
        s = "0" + s;
      return  s;
    }
    
    function CountBack(secs) {
      if (secs < 0) {
        document.getElementById("cntdwn").innerHTML = FinishMessage;
        return;
      }
      DisplayStr = DisplayFormat.replace(/%%D%%/g, calcage(secs,86400,100000));
      DisplayStr = DisplayStr.replace(/%%H%%/g, calcage(secs,3600,24));
      DisplayStr = DisplayStr.replace(/%%M%%/g, calcage(secs,60,60));
      DisplayStr = DisplayStr.replace(/%%S%%/g, calcage(secs,1,60));
    
      document.getElementById("cntdwn").innerHTML = DisplayStr;
      if (CountActive)
        setTimeout("CountBack(" + (secs+CountStepper) + ")", SetTimeOutPeriod);
    }
    
    function putspan(backcolor, forecolor) {
     document.write("<span id='cntdwn'></span>");
    }
    
    if (typeof(BackColor)=="undefined")
      BackColor = "white";
    if (typeof(ForeColor)=="undefined")
      ForeColor= "#2A8827";
    if (typeof(TargetDate)=="undefined")
      TargetDate = "12/31/2020 05:00:00";
    if (typeof(DisplayFormat)=="undefined")
      DisplayFormat = "%%D%% days, %%H%% hours, %%M%% minutes, %%S%% seconds.";
    if (typeof(CountActive)=="undefined")
      CountActive = true;
    if (typeof(FinishMessage)=="undefined")
      FinishMessage = "no data";
    if (typeof(CountStepper)!="number")
      CountStepper = +1;
    if (typeof(LeadingZero)=="undefined")
      LeadingZero = true;
    
    
    CountStepper = Math.ceil(CountStepper);
    if (CountStepper == 0)
      CountActive = false;
    var SetTimeOutPeriod = (Math.abs(CountStepper)-1)*1000 + 1000;
    putspan(BackColor, ForeColor);
    var dthen = new Date(TargetDate);
    var dnow = new Date();
    if(CountStepper>0)
      ddiff = new Date(dnow-dthen);
    else
      ddiff = new Date(dthen-dnow);
    gsecs = Math.floor(ddiff.valueOf()/1000);
    CountBack(gsecs);</script>
    However, if i want to use the script twice, to display the amount of time since another datetime value, inly the first is displayed. This is what i have tried but no joy.

    Code:
    <script language="JavaScript">
     TargetDate = "06/20/2013 00:00:01";
     FinishMessage = "done"
     BackColor = "white";
     ForeColor = "black";
     CountActive = true;
     LeadingZero = true;
     DisplayFormat = "%%D%% Days %%H%%:%%M%%:%%S%% ";
     </script>
    
    <script language="JavaScript">
     TargetDate = "06/19/2013 00:00:01";
     FinishMessage = "done"
     BackColor = "white";
     ForeColor = "black";
     CountActive = true;
     LeadingZero = true;
     DisplayFormat = "%%D%% Days %%H%%:%%M%%:%%S%% ";
     </script>
    
    <script type="text/javascript"  language="JavaScript" src="time.js"></script>
    I guess the reason it doesn't work is because there are two values for TargetDate and the script just uses the first one? Is there a way of getting it to work so that i can use this multiple times on the page?

    Any help would be greatly appreciated,

    many thanks.

    Matt

  2. #2
    Join Date
    Jun 2004
    Location
    Portsmouth UK
    Posts
    2,709
    Code:
    <!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" xml:lang="en" lang="en">
    
    <head>
      <title></title>
    </head>
    
    <body>
    <div id="cntdwn1" ></div>
    <div id="cntdwn2" ></div>
    <script type="text/javascript">
    /*<![CDATA[*/
    
    var CountDown={
    
     start:function(o){
      o.obj=document.getElementById(o.ID);
      if (o.obj){
       o.TargetDate=o.TargetDate||"12/31/2020 05:00:00";
       o.DisplayFormat = o.DisplayFormat||"%%D%% days, %%H%% hours, %%M%% minutes, %%S%% seconds.";
       o.CountActive = o.CountActive!==false;
       o.FinishMessage = o.FinishMessage||"no data";
       o.CountStepper =o.CountStepper||+1;
       o.LeadingZero = o.LeadingZero!==false;
       o.CountStepper = Math.ceil(o.CountStepper);
       if (o.CountStepper == 0)
        o.CountActive = false;
       o.SetTimeOutPeriod = (Math.abs(o.CountStepper)-1)*1000 + 1000;
       var dthen = new Date(o.TargetDate),dnow = new Date(),ddiff;
       if(o.CountStepper>0)
        ddiff = new Date(dnow-dthen);
       else
        ddiff = new Date(dthen-dnow);
       this.CountBack(o,Math.floor(ddiff.valueOf()/1000));
      }
    
     },
    
     calcage:function(o,secs, num1, num2) {
      var s = ((Math.floor(secs/num1))%num2).toString();
      if (o.LeadingZero && s.length < 2)
        s = "0" + s;
      return  s;
     },
    
     CountBack:function(o,secs) {
      if (secs < 0) {
        o.obj.innerHTML = o.FinishMessage;
        return;
      }
      var oop=this,d = o.DisplayFormat.replace(/%%D%%/g, oop.calcage(o,secs,86400,100000));
      d = d.replace(/%%H%%/g, oop.calcage(o,secs,3600,24));
      d = d.replace(/%%M%%/g, oop.calcage(o,secs,60,60));
      d = d.replace(/%%S%%/g, oop.calcage(o,secs,1,60));
    
      o.obj.innerHTML = d;
      if (o.CountActive)
        o.to=setTimeout(function(){ oop.CountBack(o,secs+o.CountStepper); }, o.SetTimeOutPeriod);
     }
    
    }
    
    CountDown.start({
     ID:'cntdwn1',
     TargetDate:"06/20/2013 00:00:01",
     FinishMessage:"done",
     CountActive:true,
     LeadingZero:true,
     DisplayFormat:"%%D%% Days %%H%%:%%M%%:%%S%% "
    });
    
    CountDown.start({
     ID:'cntdwn2',
     TargetDate:"06/20/2013 00:00:01",
     FinishMessage:"done",
     CountActive:true,
     LeadingZero:true,
     DisplayFormat:"%%D%% Days %%H%%:%%M%%:%%S%% "
    });
    
    /*]]>*/
    </script>
    </body>
    
    </html>
    Vic

    God loves you and will never love you less.

    http://www.vicsjavascripts.org/Home.htm
    If my post has been useful please donate to http://www.operationsmile.org.uk/

  3. #3
    Join Date
    Dec 2008
    Posts
    42
    Thanks very much Vic, that worked perfectly.

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