Restrict File Size Before Upload?

Jun 14, 2011

In JSP / HTML, I want to restrict the size of file being uploaded.

<input type="file" name="myfile"/>

If the user trying to upload a file size bigger than some value say 5MB, i want to give mesage to the user. I don't want to wait till the file gets uploaded to server and then validate the file size. I am looking for client side validation. Can it be done using scripting language or any other way?

Need a solution for this in Internet Explorer. I got a solution using ActiveX control:

var myFSO = new ActiveXObject("Scripting.FileSystemObject");
var filepath = document.getElementById('myfile').value;
var thefile = myFSO.getFile(filepath);
var sizeInBytes = thefile.size;

But ActiveX controls are not allowed in our application. Is there any alternative way for this?

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* Is there any way to do achieve this?
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But if I upload a huge file size more than 10MB, then it cannot even go
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After 30 seconds, it has error "The page cannot be displayed" shown on
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function IELimmit(calculate)

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[Code]...

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