Using javascript to determine if file exists on host site

[Daniel Borden]

Big hello to my fellow programmers - I'm new to javascript and PHP and I am
wondering if there is a method or function to capture a 404 error in the
event a particular html file cannot be found. I want to redirect that error
to another page or design the code to send me an email telling me what page
was selected and not found. In other languages I can trap such an error and
respond to it.

Thanks,
Dan

[Janwillem Borleffs]

"Daniel Borden" <db******@nycap.rr.com> schreef in bericht
news:V1*******************@twister.nyroc.rr.com...

Big hello to my fellow programmers - I'm new to javascript and PHP and I am wondering if there is a method or function to capture a 404 error in the
event a particular html file cannot be found. I want to redirect that error to another page or design the code to send me an email telling me what page was selected and not found. In other languages I can trap such an error and respond to it.

Just use Apache's ErrorDocument directive (or equal when you are not using
Apache).
JW

[Warren Sarle]

In article <V1*******************@twister.nyroc.rr.com>,
"Daniel Borden" <db******@nycap.rr.com> writes:

Big hello to my fellow programmers - I'm new to javascript and PHP and I am
wondering if there is a method or function to capture a 404 error in the
event a particular html file cannot be found. I want to redirect that error
to another page or design the code to send me an email telling me what page
was selected and not found. In other languages I can trap such an error and
respond to it.

This is very simple in PHP. There are several functions that
will tell whether a file exists and is readable on your server
or another server. For example, you could start with
http://www.php.net/manual/en/function.is-readable.php
--

Warren S. Sarle SAS Institute Inc. The opinions expressed here
sa****@unx.sas.com SAS Campus Drive are mine and not necessarily
[phone] Cary, NC 27513, USA those of SAS Institute.

[Grant Wagner]

Daniel Borden wrote:

Big hello to my fellow programmers - I'm new to javascript and PHP and I am
wondering if there is a method or function to capture a 404 error in the
event a particular html file cannot be found. I want to redirect that error
to another page or design the code to send me an email telling me what page
was selected and not found. In other languages I can trap such an error and
respond to it.

Thanks,
Dan

This would not be a client-side JavaScript or a server-JavaScript or PHP issue
(well, not directly).

Configure your web server to go to a custom 404 response page, then that 404
response page can execute any server-side code of your choice to do whatever
you want it to do. How you do this is server dependant, in apache, you use the
ErrorDocument directive: <url:
http://httpd.apache.org/docs/mod/cor...#errordocument />. ErrorDocument can
be specified site wide, or just for a specific directory, it can also be
changed dynamically by adding it to/changing it in a .htaccess file in a
directory.

--
| Grant Wagner <gw*****@agricoreunited.com>

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*
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*
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