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******************************************************** | |
Usage Sample: | |
<script language="JavaScript"> | |
TargetDate = "12/31/2020 5:00 AM"; | |
BackColor = "palegreen"; | |
ForeColor = "navy"; | |
CountActive = true; | |
CountStepper = -1; | |
LeadingZero = true; | |
DisplayFormat = "%%D%% Days, %%H%% Hours, %%M%% Minutes, %%S%% Seconds."; | |
FinishMessage = "It is finally here!"; | |
</script> | |
<script language="JavaScript" src="https://gist.github.com/hasbromlp/7955525"></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 = "12/31/2020 5:00 AM"; | |
if (typeof(DisplayFormat)=="undefined") | |
DisplayFormat = "%%D%% Days, %%H%% Hours, %%M%% Minutes, %%S%% Seconds."; | |
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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