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retrive value from a text file & use it in html

Posted on 2000-05-08
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Last Modified: 2010-04-09
I want to put a text file on my webpage, say version.txt with one line in it 'Version 1.2'.  I want then all my other html pages to display this version number so I don't have to change each page, just the contents of the text file...or can I have a Global variable in my index.htm file which can be used by other pages? can't use ASP etc.
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Question by:degziebob
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6 Comments
 
LVL 8

Expert Comment

by:jbirk
ID: 2788102
If you can use SSI (server side includes) you can easily just pick a spot on each web page and put the appropriate include tag (for whatever version of SSI you have), and the server will then grab the text from that document and include it in the web page.  The user will see it as if it was actually part of the web page.  SSI is realy nice if you have it:)

If you don't, then the variable method is a possibility.  If you are using frames, then it's a little easier, if not you'd have to use cookies.  The only drawback to cookies is that it will take more code on every single page you want to have this version number (cookie code can be big!).  With frames a simple document.write(top.version) will do.

Tell me which method you'd like to pursue and I can work on a solution for you.

-Josh
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Author Comment

by:degziebob
ID: 2788669
I'm happy enough to put a bit of code in each page that will display the version.  This code won't change, just the text file.

Thanks....don't think I have SSI, & dont want to use frames.
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LVL 8

Expert Comment

by:jbirk
ID: 2789463
So you're saying you want to go with the cookie method?  For this method you don't actually have a seperate text file.  You just update the version info in the main page or pages, and then once they are loaded again, they will set the cookie with the proper value and any other pages on your site after that will get that cookie and display the info.  The only problem you will have is if someone has cookies or javascript turned off, and if they don't go to your main page (I.E. bookmarking a page deep into the site and never returning to the home page, like I do here with EE).  In my opinion this is the worst and most difficult one to do, but with no SSI, I guess there's not many options...

Still interested?  The cookie code can be kind of long.  You'll probably want to include it via a javascript include to reduce load time (it gets cached).

-Josh
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LVL 8

Expert Comment

by:jbirk
ID: 2789482
D'oh!  That reminds me of a much better solution!

Use javascript include to include the variable.  Then use a document.write to write it out.  Code coming...

-Josh
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LVL 8

Accepted Solution

by:
jbirk earned 50 total points
ID: 2789495
OK, the file should be called version.js or something like that and look like this (just one line:
var version = "Version 1.2"


Then to include it:
<SCRIPT language="JavaScript" src="/version.js"></SCRIPT>


Then wherever you want this to go in the document:
<SCRIPT language="JavaScript">
<!--
document.write(version);
// -->
</SCRIPT>


That's it!  Pretty easy hunh?

-Josh
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Author Comment

by:degziebob
ID: 2804396
perfect!
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