效果：
代码：
1 <head runat="server"> 2 <title></title> 3 <script type="text/javascript"> 4 function toDou(n) { 5 if (n < 10) { 6 return '0' + n; 7 } 8 else { 9 return '' + n; 10 } 11 } 12 setInterval( 13 window.onload = function () { 14 var aImg = document.getElementsByTagName('img'); 15 var oDate = new Date(); 16 var str = toDou(oDate.getHours()) + toDou(oDate.getMinutes()) + toDou(oDate.getSeconds()); 17 for (var i = 0; i < str.length; i++) { 18 aImg[i].src = 'Images/Number1/' + str[i] + '.jpg'; 19 } 20 }, 1000); 21 22 </script> 23 </head> 24 <body style="background-color: Black;"> 25 <div style="text-align: center; line-height: 600px"> 26 <img src="Images/Number1/0.jpg" /><img src="Images/Number1/0.jpg" /><span style="font-size: 77px; 27 color: White; text-align: center; line-height: 2px;">:</span><img src="Images/Number1/0.jpg" /><img 28 src="Images/Number1/0.jpg" /><span style="font-size: 77px; color: White;">:</span><img 29 src="Images/Number1/0.jpg" /><img src="Images/Number1/0.jpg" /> 30 </div> 31 </body>