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- /*
- Author: Robert Hashemian
- http://www.hashemian.com/
- Use of this code is hereby granted to anyone. No attribution is required.
- ********************************************************
- Usage Sample:
- <script language="JavaScript">
- TargetDate = "05/18/2017 00:00 AM UTC-0800";
- ForeColor = "#FF0000";
- BackColor = "rgba(255, 255, 255, 0.05)";
- CountActive = true;
- CountStepper = -1;
- LeadingZero = true;
- DisplayFormat = "%%D%% : %%H%% : %%M%% : %%S%% ";
- FinishMessage = "It is finally here!";
- </script>
- */
- function calcage(secs, num1, num2) {
- s = ((Math.floor(secs/num1))%num2).toString();
- if (LeadingZero && s.length < 2)
- s = "0" + s;
- return "<b>" + s + "</b>";
- }
- 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' style='background-color:" + backcolor +
- "; color:" + forecolor + "'></span>");
- }
- if (typeof(BackColor)=="undefined")
- BackColor = "white";
- if (typeof(ForeColor)=="undefined")
- ForeColor= "black";
- if (typeof(TargetDate)=="undefined")
- TargetDate = "05/18/2017 0:00 AM";
- if (typeof(DisplayFormat)=="undefined")
- DisplayFormat = "%%D%% : %%H%% : %%M%% : %%S%% ";
- if (typeof(CountActive)=="undefined")
- CountActive = true;
- if (typeof(FinishMessage)=="undefined")
- FinishMessage = "";
- 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 + 990;
- 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);
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