使用JS实现倒计时功能
1<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\">
2<HTML>
3<HEAD>
4<TITLE>倒计时</TITLE>
5<META NAME=\"Generator\" CONTENT=\"EditPlus\">
6<META NAME=\"Author\" CONTENT=\"\">
7<META NAME=\"Keywords\" CONTENT=\"\">
8<META NAME=\"Description\" CONTENT=\"\">
9</HEAD>
10
11<BODY>
12 <div id=\"TimeCounter\" style=\"border:1px solid black;margin:1px;padding:2px;width:170px\"></div>
13<SCRIPT language=javascript>
14<!--
15function show_date_time(){
16 window.setTimeout(\"show_date_time()\", 1000);
17 target=new Date(2007,9,19,10,13,0);
18 today=new Date();
19 timeold=(target.getTime()-today.getTime());
20
21 sectimeold=timeold/1000
22 secondsold=Math.floor(sectimeold);
23 msPerDay=24*60*60*1000
24 e_daysold=timeold/msPerDay
25 daysold=Math.floor(e_daysold);
26 e_hrsold=(e_daysold-daysold)*24;
27 hrsold=Math.floor(e_hrsold);
28 e_minsold=(e_hrsold-hrsold)*60;
29 minsold=Math.floor((e_hrsold-hrsold)*60);
30 seconds=Math.floor((e_minsold-minsold)*60);
31
32 if (daysold<0) {
33 document.getElementById(\"TimeCounter\").innerHTML=\"逾期,倒计时已经失效\";
34}
35 else{
36 if (daysold<10) {daysold=\"0\"+daysold}
37 if (daysold<100) {daysold=\"0\"+daysold}
38 if (hrsold<10) {hrsold=\"0\"+hrsold}
39 if (minsold<10) {minsold=\"0\"+minsold}
40 if (seconds<10) {seconds=\"0\"+seconds}
41 if (daysold<3) {
42 document.getElementById(\"TimeCounter\").innerHTML=\"<font color=red>\"+daysold+\"天\"+hrsold+\"小时\"+minsold+\"分\"+seconds+\"秒</font>\";
43}
44 else
45 document.getElementById(\"TimeCounter\").innerHTML=daysold+\"天\"+hrsold+\"小时\"+minsold+\"分\"+seconds+\"秒\";
46}
47}
48show_date_time();
49//-->
50</SCRIPT></div>
51</BODY>
52</HTML>
