Run code at different periods of time

[yuori]

How can i do an non intrusive alarm at different period of time before the test ended? Like a music is played 15mins before the test ended.

<script type ="text/javascript">
 
var dStopTime = new Date();
dStopTime.setHours(dStopTime.getHours(),dStopTime. getMinutes()+20,dStopTime.getSeconds());
var clockID = 0;
function UpdateClock() {
if(clockID) {
clearTimeout(clockID);
clockID = 0;
}
var dNow = new Date();
if(dNow<dStopTime) {
dNow.setHours(dStopTime.getHours()-dNow.getHours(),dStopTime.getMinutes()-dNow.getMinutes(),dStopTime.getSeconds()-dNow.getSeconds());
strContent = "&nbsp;<b>"+setLeadingZero(dNow.getHours())+":"+setLeadingZero(dNow.getMinutes())+":"+setLeadingZero(dNow.getSeconds())+"</b>&nbsp;";
if(dNow.getMinutes()<1) strContent="<font color=#ff0000>"+strContent+"</font>";
document.getElementById("vtimer").innerHTML=strContent;
clockID = setTimeout("UpdateClock()", 500);
} else {
clearTimeout(clockID);
clockID = 0;
document.getElementById("vtimer").innerHTML = "<b>00:00:00</b>";
}
}
function setLeadingZero(i) {
return (i<10) ? "0"+i : i;
}
clockID = setTimeout("UpdateClock()", 500);
 
 
 
</script>

Code in tags please - moderator

[sumittyagi]

use setInterval and clearInterval if you want to repeatedly run a function after specified time. setTimeout runs ur function only once.

[acoder]

Changed thread title.