(053)javascript_event_textonlynum 

 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     <title>EVENT</title>
 6     <style type="text/css">
 7         
 8     </style>
 9     <script type="text/javascript">
10 
11         window.onload = function() {
12 
13             var myText = document.getElementById("myText");
14 
15             myText.onkeydown = function(ev) {
16 
17                 var oEvent = ev || event;
18                 //0 keyCode 48
19                 //退格 keyCode 8
20                 var code = oEvent.keyCode;
21                 if(code != 8 && (code < 48 || code > 48 + 10 - 1))
22                 {
23                     return false;
24                 }
25             };
26         }
27         
28     </script>
29 </head>
30 
31 <body>
32 
33     <input id="myText" type="text"/>
34     
35 </body>
36 </html>

 

posted @ 2014-03-23 11:51  雪中飞雁  阅读(125)  评论(0)    收藏  举报