open and read a type='file' on javascript

Question

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Local file access with javascript

I have this code :

<form onSubmit="return checkFile();" enctype="multipart/form-data" method='POST' action="index.php?status=import" >
    <input name="tracklistFile" type="file" value="CHOOSE" />   
    <input type="submit" name="send" />
</form>

and I'd like, before submit it to the server, call that function checkFile(), that must open this file, read it and do some check operations.

Can I do it on Javascript?
Is it better (cause cross-browsers) use a framework? (jQuery?)

Thanks

P.S. Of course I'll do the same check operations of the file on server side, but I'd like to test it also client-side

score 4 · Accepted Answer · edited May 23 '17 at 12:03

4

It is not possible to access/open any files using javascript. The browser security system will not allow this.

It is same as this question

edited May 23 '17 at 12:03

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answered Apr 26 '11 at 13:29

Arun P Johny

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neither for just read the file? – markzzz Apr 26 '11 at 13:33
yes.. the browser's sandbox will not allow access to any local resources in the system. – Arun P Johny Apr 26 '11 at 13:36
Thanks man! It's a bit bad this, but ok :) – markzzz Apr 26 '11 at 13:51

open and read a type='file' on javascript

1 Answers1