IE浏览器下读取客户端上传的文件大小

 1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 2 <html>
 3 <head>
 4 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 5 <title>文件大小判断</title>
 6 </head>
 7 <body>
 8 限制：<input type="text" size="4" value="10" name="fileSizeLimit" id="fileSizeLimit"/> K  
 9 <input type="file" name="file1" id="file1" size="40" onchange="changeSrc(this)"/>  
10 <br>  
11 <img id="fileChecker" />   
12   
13 <script type="text/javascript">  
14 var oFileChecker = document.getElementById("fileChecker");  
15   
16 function changeSrc(filePicker)  
17 {  
18     oFileChecker.src = filePicker.value;  
19 }  
20   
21 oFileChecker.onreadystatechange = function ()  
22 {  
23     if (oFileChecker.readyState == "complete")  
24     {  
25         checkSize();  
26     }  
27 }  
28   
29 function checkSize()  
30 {  
31     var limit  = document.getElementById("fileSizeLimit").value * 1024;  
32   
33     if (oFileChecker.fileSize > limit)  
34     {  
35         alert("文件大小超出限制!");  
36     }  
37     else  
38     {  
39         alert("文件大小符合要求.");  
40     }  
41 }  
42 </script>
43 </body>
44 </html>