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Re: How to validate a file in a javascript

From Cezary Tomczyk <cezary.tomczyk@gmail.com>
Newsgroups comp.lang.javascript
Subject Re: How to validate a file in a javascript
Date 2012-10-29 15:20 +0100
Organization Aioe.org NNTP Server
Message-ID <k6m3bf$u39$1@speranza.aioe.org> (permalink)
References <804583d9-ac09-492c-b488-8989cb13727c@googlegroups.com> <k6k8kh$svj$1@speranza.aioe.org> <b1e733ca-8409-410a-8f74-bf5c9a6014cc@googlegroups.com> <k6lgcv$vth$2@dont-email.me>

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W dniu 2012-10-29 09:57, Denis McMahon pisze:
> On Sun, 28 Oct 2012 23:32:33 -0700, Katja wrote:
>
>>> I wouldn't trust on file extensions. As a just a warning for user then
>>>
>>> it is ok. Just my "5 cents".
>>>
>> I know but I still need it =)
>
> Javascript has no direct access to the filesystem. Thus, it can not
> reliably determine the size of a file. At best, you can do (sub)string
> comparisons and regex checks against a file name entered into a form
> field.

Not really. There is some possibilities. See:
https://developer.mozilla.org/en-US/docs/Using_files_from_web_applications

There is "but". File API must be implemented in browser.

-- 
Cezary Tomczyk
http://www.ctomczyk.pl/

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Thread

How to validate a file in a javascript Katja <kate.kokatjuhha@gmail.com> - 2012-10-28 11:56 -0700
  Re: How to validate a file in jquery Denis McMahon <denismfmcmahon@gmail.com> - 2012-10-28 21:11 +0000
  Re: How to validate a file in a javascript Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2012-10-28 22:38 +0100
    Re: How to validate a file in a javascript Katja <kate.kokatjuhha@gmail.com> - 2012-10-28 23:32 -0700
      Re: How to validate a file in a javascript Denis McMahon <denismfmcmahon@gmail.com> - 2012-10-29 08:57 +0000
        Re: How to validate a file in a javascript Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2012-10-29 15:20 +0100
          Re: How to validate a file in a javascript Denis McMahon <denismfmcmahon@gmail.com> - 2012-10-29 23:22 +0000
            Re: How to validate a file in a javascript Jeff North <jnorthau@yahoo.com.au> - 2012-10-30 17:11 +1100
              Re: How to validate a file in a javascript Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-11-01 21:51 +0100
        Re: How to validate a file in a javascript Dr J R Stockton <reply1244@merlyn.demon.co.uk.invalid> - 2012-10-30 19:47 +0000

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