Passing Javascript variable to VBScript

Posted on 2004-03-26
Last Modified: 2012-06-27

Does anyone know of a way to set a vbscript variable equal to a javascript variable without reloading the page? I can't figure out how to do that...thanks in advance!
Question by:animated405
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Author Comment

ID: 10689235

Maybe a little context would be nice...

What I would like to do is validate a code a user would enter through a form and display an alert box if the code isn't in my db, without submitting the form.

LVL 31

Assisted Solution

GwynforWeb earned 100 total points
ID: 10689308
really simple just change the tags as treat as the same variable

<script language=VBScript>
LVL 63

Accepted Solution

Zvonko earned 25 total points
ID: 10690563
The lookup for code in db is not gona work in browser.
You have to submit the form to do the lookup on server side.
If you provide all codes to browser side, then is the user also able to lookup the code in the page source :-)
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Author Comment

ID: 10690653

Thanks, that's great except for I'm going to be using some logic in the asp that connects to the database and I notice that because it's contained within the script tags like that it shows on when you view the source. I don't want even a procedure name or connection variable to be present for anyone to see. Thoughts?

thanks again

Author Comment

ID: 10690681

Sorry nevermind, I don't know what I was thinking that I could use a connection to the db that way...but that's good to know for future reference passing the variable around like that
LVL 63

Expert Comment

ID: 10690763
For that is Experts Exchange: To talk about it.
It is gone fast that one do not see the forest because of the trees :-)

Thanks for the points.

LVL 12

Expert Comment

ID: 10692519
I was just browsing through the solutions and saw this one, and thought I would comment on it.

There is actually a way. Have a hidden iframe:

<iframe style="display:none;" src=somepage.asp name=aspFrame></iframe>

The iframe should look something like this:

dim varName
if varName<>"" then
   response.write("<script>alert('The variable is called "+varName+"');</script>");
end if

<form action=somepage.asp method=post>
<input type=hidden name=fieldName>

And when you want to send the data, do this:

varName="Some value";

I haven't actually tested it but it should work.

Author Comment

ID: 10701075

That's an intersting technique, I'll have to play around with that as well. thanks

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