4．显示当前日期和时间 可以让来访者知道现在的时间，而且会随着系统时间随时调整。
具体方法：
在网页HTML源文件的
1<body>和</body>
之间你想要时间显示的空白处点击鼠标，输入：
1<script language="”JavaScript”">
2
3<!--
4
5var enabled = 0; today = new Date();
6
7var day; var date;
8
9if(today.getDay()==0) day = "星期日 "
10
11if(today.getDay()==1) day = "星期一 "
12
13if(today.getDay()==2) day = "星期二 "
14
15if(today.getDay()==3) day = "星期三 "
16
17if(today.getDay()==4) day = "星期四 "
18
19if(today.getDay()==5) day = "星期五 "
20
21if(today.getDay()==6) day = "星期六 "
22
23document.fgColor = " FF0072";
24
25date1 =(today.getYear()) + "年" + (today.getMonth() + 1 ) + "月" + today.getDate() + "日 " ;
26
27date2 = day ;
28
29document.write(date1.fontsize(2));
30
31document.write(date2.fontsize(2));
32
33document.write("<span id='clock'></span>");
34
35var now,hours,minutes,seconds,timeValue;
36
37function showtime(){
38
39now = new Date();
40
41hours = now.getHours();
42
43minutes = now.getMinutes();
44
45seconds = now.getSeconds();
46
47timeValue = (hours >= 12) ? "下午 " : "上午 ";
48
49timeValue += hours+ ":";
50
51timeValue += ((minutes < 10) ? "0" : "") + minutes + ":";
52
53timeValue += ((seconds < 10) ? "0" : "") + seconds + "";
54
55clock.innerHTML = timeValue;
56
57setTimeout("showtime()",100);
58
59}
60
61showtime();
62
63\-->
64
65</script>
保存退出。这里就不要再做什么替换了。