JavaScript is used for things like "roll over buttons", "drop down menus" etc. where something changes on the page when it is clicked or rolled over.
It has a problem where it is activated by the browser and is not supported to the same extent in every browser and some users turn JavaScript off for security reasons.
<form name="time">
<input type="text" name="time2" size=15 />
</form>
<script type="text/javascript">
function liveclock(){
var curdate=new Date()
var hours=curdate.getHours()
var minutes=curdate.getMinutes()
var seconds=curdate.getSeconds()
var suffix="AM"
if (hours>=12){ suffix="PM"
if (hours>=13)hours-=12 }
if (minutes<10)
minutes="0"+minutes
if (seconds<10)
seconds="0"+seconds
var thetime=hours+":"+minutes+":"+seconds+" "+suffix
document.time.time2.value=thetime
setTimeout("liveclock()",1000)
}
liveclock()
</script>