detect file size

file size of what?

There are no predefined functions which can tell you the file-size of any page currently loaded...

does that answer your question?

regards,
CJ

see i want to findout  the size of a file(any images,documents,...etc) in my computer.

hmm cj,
Javascript can be server side too.

But if you want to know the filesize of files on the client side.
You can try this :

bytesize of the document that the script is running from :
document.filesize

and for images :

myImage = new Image();
myImage.src = 'file:///D|/test.gif';
myimage.filesize //will return the image in bytes

But for a detaild file info of your files.. you could run a webserver and use FileSystemObject.

Or you could do like CJ_S said

This question has been abandoned. I will make a recommendation to the
moderators on its resolution in a week or two. I appreciate any comments
that would help me to make a recommendation.
<note>
   In the absence of responses, I may recommend DELETE unless it is clear
   to me that it has value as a PAQ.  Silence = you don't care
</note>

Cd&

It is time to clean this abandoned question up.  

I am putting it on a clean up list for CS.

<recommendation>
points to CJ_S

</recommendation>

If anyone participating in the Q disagrees with the recommendation,
please leave a comment for the mods.

Cd&

per recommendation

SpideyMod
Community Support Moderator @Experts Exchange