setTimeout(code,millisec) //- Execute the code after the specified time
Code must;
millisec must;
clearTimeout(setTimeoutId) //- Cancel setTimeout()
setInterval(code,millisec); // Specify the interval between milliseconds and loop to execute the code
Code must;
millisec must;
clearInterval(intervalId);
Use setTimeout(code, millisec) to achieve the setInterval effect, only nested calling methods;
Below is a countdown page
The code copy is as follows:
<!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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>Unt titled document</title>
<script type="text/javascript">
var c=6;
var t;
function timedCount()
{
var time = document.getElementById('txt').value;
if( time>0){
document.getElementById('txt').value=c;
c=c-1;
t=setTimeout("timedCount()",1000);
}
else{
clearTimeout(t);
}
}
</script>
</head>
<body>
<form>
<input type="button" value="Start time!" onClick="timedCount()">
<input type="text" id="txt" value="6">
</form>
</body>
</html>