File Size Validation

anis's Avatar, Join Date: Apr 2007
Newbie Member
Hello All,
I have 125kb file on my system.I want to validate file size not more than 80kb in JavaScript. when i upload a file.Pls suggest me javascript code for this file size validation.
thanks.
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DaWei's Avatar, Join Date: Dec 2006
Team Leader
Javascript does not have the ability to do that (for security reasons). For IE you would need to have the user accept an appropriate Active-X control.
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anis's Avatar, Join Date: Apr 2007
Newbie Member
Hello,
Is it possible file size validation in PHP using AJAX. If yes pls help me and reply soon.
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pradeep's Avatar, Join Date: Apr 2005
Team Leader
Either you'll need to use an ActiveX control or you'll have to use a server-side validation.
You cannot validate filesize using AJAX 'cause that'll require posting the file, which again is not possible due to JavaScript's limited filesystem abilities.

You can also try the same with an applet, which will ensure cross-platform functioning.