<script language="javascript" type="text/javascript">

function showTime() {var myTime = new Date();
var inHours = myTime.getHours();
if (inHours < 10) {inHours = "0" + inHours}
var inMinutes = myTime.getMinutes();
if (inMinutes < 10) {inMinutes = "0" + inMinutes}
var inSeconds = myTime.getSeconds();
if (inSeconds < 10) {inSeconds ="0" + inSeconds}
document.write("现在的时间是：" + inHours + ":" + inMinutes + ":" + inSeconds)}
list = setInterval(showTime,1000);
</script>

刚开始发现只能显示一次时间，就不动了，原来是因为document.write把源程序给替换了，函数不见了。list = setInterval(showTime,1000);setInterval的机制是怎么样的，难道没有记下来。

[此贴子已经被作者于2007-8-28 9:52:58编辑过]

<script src="new.js" type="text/javascript"></script>
<script>show=setInterval("showTime()",1000);</script>
new.js
function showTime(){var myTime = new Date();
var inHours = myTime.getHours();
if (inHours < 10) {inHours = "0" + inHours}
var inMinutes = myTime.getMinutes();
if (inMinutes < 10) {inMinutes = "0" + inMinutes}
var inSeconds = myTime.getSeconds();
if (inSeconds < 10) {inSeconds ="0" + inSeconds}
clearInterval(show);
location.reload();//如果不要这行，就会出现每秒的时间
document.write('<script src="new.js" type="text/javascript"></script>');
document.write(inHours+":"+inMinutes+":"+inSeconds+"<BR>");
document.write('<script>show=setInterval("showTime()",1000);</script>');
}