简单的网页数字时钟

先来一个最终实现效果图：

主要实现思路：利用JavaScript内置对象Date来获取当前系统时间，通过DOM方法setInterval(code,time)方法来实现实时的刷新。
1. 简单一个Html页面
   1: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
   2: <html xmlns="http://www.w3.org/1999/xhtml">
   3: <head>
   4:   <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
   5:   <link rel="stylesheet" href="css/clock.css" />
   6:   <title>简单时钟</title>
   7: </head>
   8: <body>
   9: <div id="clock">
10:     <div class="year">
11:         <div id="Year" class="num">0000</div>
12:         <div id="year">年</div>
13:         <div id="Month" class="num">00</div>
14:         <div id="month">月</div>
15:         <div id="Date" class="num">00</div>
16:         <div id="date">日</div>
17:     </div>
18:     <div class="time">
19:         <div id="Hour" class="num">00</div>
20:         <div class="sign">:</div>
21:         <div id="Minute" class="num">00</div>
22:         <div class="sign">:</div>
23:         <div id="Second" class="num">00</div>
24:         <div id="week">星期</div>
25:         <div id="Week" class="num">一</div>
26:     </div>
27: </div>
28: </body>
29: </html>
2. clock.js的实现
   1: var timer=null;
   2: var aNow=null;
   3: var g_oImgWeek=null;
   4: var aWeekName=["日", "一", "二", "三","四", "五", "六"];
   5:
   6: function setclock()
   7: {
   8:     setInterval(checkSwitch, 1000);
   9: };
10: function checkSwitch()
11: {
12:     var year=document.getElementById('Year');
13:     var month=document.getElementById('Month');
14:     var date=document.getElementById('Date');
15:     var hour=document.getElementById('Hour');
16:     var minute=document.getElementById('Minute');
17:     var second=document.getElementById('Second');
18:     var week=document.getElementById('Week');
19:
20:     aNow=getTimeArray();
21:
22:     year.innerHTML=aNow[0];
23:     month.innerHTML=aNow[1];
24:     date.innerHTML=aNow[2];
25:     hour.innerHTML=aNow[3];
26:     if(aNow[4] < 10){
27:         minute.innerHTML='0'+aNow[4];
28:     }
29:     else{
30:         minute.innerHTML=aNow[4];
31:         }
32:     if(aNow[5] < 10){
33:         second.innerHTML='0'+aNow[5];
34:     }
35:     else{
36:         second.innerHTML=aNow[5];
37:     }
38:     week.innerHTML=aWeekName[aNow[6]];
39:
40: }
41:
42: function toDouble(iNum)
43: {
44:     if(iNum<10)
45:     {
46:         return ' 0'+iNum;
47:     }
48:     else
49:     {
50:         return ' '+iNum;
51:     }
52: }
53:
54: function getTimeArray()
55: {
56:     var oDate=new Date();
57:     var aNumber=[];
58:
59:     var iYear=oDate.getYear();
60:     var iMonth=oDate.getMonth();
61:     var iDay=oDate.getDate();
62:     var iHour=oDate.getHours();
63:     var iMin=oDate.getMinutes();
64:     var iSec=oDate.getSeconds();
65:     var iWeek=oDate.getDay();
66:
67:     if(iYear<1900)
68:     {
69:         iYear+=1900;
70:     }
71:
72:     var str=(iYear)+toDouble(iMonth+1)+toDouble(iDay)+toDouble(iHour)+toDouble(iMin)+toDouble(iSec)+' '+iWeek;
73:     var aChar=str.split(' ');
74:
75:     for(i=0;i<aChar.length;i++)
76:     {
77:         aNumber[i]=parseInt(aChar[i]);
78:     }
79:     return aNumber;
80: }

3.Html中引入clock.js文件
   1: <script

补充：web前端 , JavaScript ,