javascript學習筆記（三）顯示當時時間

主要是為了熟悉javascript中在date對象
html代碼如下：
view sourceprint?1 <div id="showTime"></div>

javascript 代碼如下：時間顯示格式為：2011-04-04 星期二 12:09:34
view sourceprint?01 function startTime() { 

02     try{ 

03     var today = new Date(); 

04     var year = today.getFullYear(); 

05     var month = checkNum(today.getMonth()+1); 

06     var date = checkNum(today.getDate()); 

07     var day = today.getDay(); 

08     var hour = checkNum(today.getHours()); 

09     var minute = checkNum(today.getMinutes()); 

10     var second = checkNum(today.getSeconds()); 

11     switch(day) { 

12         case 1: 

13             day = "一"; 

14             break; 

15         case 2: 

16             day = "二"; 

17             break; 

18         case 3: 

19             day = "三"; 

20             break; 

21         case 4: 

22             day = "四"; 

23             break; 

24         case 5: 

25             day = "五"; 

26             break; 

27         case 6: 

28             day = "六"; 

29             break; 

30         case 7: 

31             day = "日"; 

32             break; 

33     } 

34     var fullTime = year+"-"+month+"-"+date+" "+"星期"+day+" "+hour+":"+minute+":"+second; 

35     document.getElementById("showTime").innerHTML = fullTime; 

36     setInterval(startTime(), 1000); 

37     }catch(e) { 

38         alert(e.description); 

39     } 

40 } 

41 function checkNum(num) { 

42     if(num<10) { 

43         num = "0"+num; 

44     } 

45     return num; 

46 }