Verify URL/file exists

[akadelski]

I need a way to verify a file exists before I attempt to open it.

Right now we are storing PDFs server-side and I need a way to either 1.
Check if the physical file exists or 2. check if the URL exists.

I'm opening the PDFs with the following: var
Win=open(theLinkURL,"",linkString);

I create theLinkURL dynamically and the file may or may not exist.

Any help would be GREATLY appreciated.
-Amy

 

[Randy Webb]

akadelski said the following on 5/17/2006 7:58 PM:

I need a way to verify a file exists before I attempt to open it.

Right now we are storing PDFs server-side and I need a way to either 1.
Check if the physical file exists or 2. check if the URL exists.

Post a form to a hidden IFrame that submits to a server side script that
checks the existence of that file. If it exists, return a page with the
script to attempt to open a new window. If it doesn't exist, return a
page with script to modify the parent page to notify the user that the
file doesn't exist.

 

[akadelski]

Do you have any code samples for this?
All my javascript so far is client side. I'm confused at what the
server-side javascript will look like. I'm muddling through it now.

 

[Randy Webb]

akadelski said the following on 5/18/2006 5:59 PM:

Do you have any code samples for this?

Code samples for what?

Please quote what you are replying to.

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All my javascript so far is client side. I'm confused at what the
server-side javascript will look like. I'm muddling through it now.

What server side languages does your web hosting service provide? ASP,
PHP, PERL, what?