Count Up & Down - JavaScript Clock Code

JavaScript to count up & down together. Stopwatch and countdown timer combination of features, it can be used simultaneously or separately. It will pop-up window to alert when the time is over or up.

Script Demo:

Demo

JavaScript Code:

Insert this code into <head> tags

<script language="javascript">

<!-- Begin
var up,down;var min1,sec1;var cmin1,csec1,cmin2,csec2;
function Minutes(data) {
for(var i=0;i<data.length;i++)
if(data.substring(i,i+1)==":")
break;
return(data.substring(0,i));
}
function Seconds(data) {
for(var i=0;i<data.length;i++)
if(data.substring(i,i+1)==":")
break;
return(data.substring(i+1,data.length));
}
function Display(min,sec) {
var disp;
if(min<=9) disp=" 0";
else disp=" ";
disp+=min+":";
if(sec<=9) disp+="0"+sec;
else disp+=sec;
return(disp);
}
function Up() {
cmin1=0;
csec1=0;
min1=0+Minutes(document.sw.beg1.value);
sec1=0+Seconds(document.sw.beg1.value);
UpRepeat();
}
function UpRepeat() {
csec1++;
if(csec1==60) {
csec1=0; cmin1++;
}
document.sw.disp1.value=Display(cmin1,csec1);
if((cmin1==min1)&&(csec1==sec1))
alert("Stopwatch Stopped");
else up=setTimeout("UpRepeat()",1000);
}
function Down() {
cmin2=1*Minutes(document.sw.beg2.value);
csec2=0+Seconds(document.sw.beg2.value);
DownRepeat();
}
function DownRepeat() {
csec2--;
if(csec2==-1) {
csec2=59; cmin2--;
}
document.sw.disp2.value=Display(cmin2,csec2);
if((cmin2==0)&&(csec2==0))
alert("Countdown Stopped");
else down=setTimeout("DownRepeat()",1000);
}
// End -->
</script>

Insert this code into <body> tags

<center>
<form name="sw">
<table border="0" width="100%">
<tr align="center">
<td><table border="3" width="100%"><tr>
<th colspan="2">Stopwatch</th></tr>
<tr align="center">
<td>Stop at<br>
<input type="text" name="beg1" size="7" value="0:10"></td>
<td><input type="button" value="Start" onclick="Up()"></td>
</tr>
<tr align="center"><td colspan="2">
<input type="text" name="disp1" size="7"></td></tr></table></td>
<td>
<input type="button" value="Start Both" onclick="Up();Down()">
</td>
<td>
<table border="3" width="100%">
<tr align="center">
<td>Start at<br><input type="text" name="beg2" size="7" value="0:10"></td>
<td><input type="button" value="Start" onclick="Down()"></td>
</tr>
<tr align="center"><td colspan="2">
<input type="text" name="disp2" size="7"></td></tr></table></td></tr>
</table>
</form>
</center>

Instruction:

Webmaster » Web Programming » JavaScript » Clock Code » Count Up & Down

Related Links:

Home | Sitemap | Bookmark This Page

Sponsored Links

Recommended Links