动态的显示当前的时间---setInterval的用法

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>Document</title>
 6      <!--引入框架-->
 7     <link href="resource/bootstrap/css/bootstrap.css" rel="stylesheet">
 8     <script src="resource/jQuery/jquery-1.11.3.js"></script>
 9     <script src="resource/bootstrap/js/bootstrap.js"></script>
10 
11     <!--引入自己的js-->
12     <script src="js/demo1.js"></script>
13 
14     <style>
15         /*css选择器：class,id,标签,复合选择器*/
16     </style>
17 </head>
18 <body>
19     <!-- <script> 
20     window.onload=init; 
21     setInterval('init()',1000); 
22     function init() 
23     { 
24        var date = new Date(); 
25        var year = date.getYear(); 
26        var month = date.getMonth()+1; 
27        if(month<10)month="0"+month; 
28        var day = date.getDate(); 
29        if(day<10)day="0"+day; 
30        var hour = date.getHours(); 
31        if(hour<10)hour="0"+hour; 
32        var minute = date.getMinutes(); 
33        if(minute<10)minute="0"+minute; 
34        var second = date.getSeconds(); 
35        if(second<10)second="0"+second; 
36        var dateTime = year+"-"+month+"-"+day+" "+hour+":"+minute+":"+second; 
37        document.getElementById("dateTime").value= dateTime; 
38     } 
39     </script> 
40     <input type="text" name="dateTime" readonly> -->
41     <SCRIPT>
42     <!--
43     document.write("<span id='time'></span>")
44     setInterval("time.innerText=new Date().toLocaleString()",1000)
45     //-->
46     </SCRIPT>
47 
48     
49 
50 </body>
51 </html>

window.setInterval的用法与实例
window.setInterval()
功能：按照指定的周期（以毫秒计）来调用函数或计算表达式。
语法：setInterval(code,millisec)

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