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Executing CGI script via Javascript

by Anonymous Monk
on Mar 16, 2001 at 01:43 UTC ( #64797=perlquestion: print w/ replies, xml ) Need Help??
Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Can I use an html link to execute a cgi script. Maybe onClick, or something? I'm not sure of the syntax.

Comment on Executing CGI script via Javascript
Re: javascript
by Hot Pastrami (Monk) on Mar 16, 2001 at 01:58 UTC
    Definitely... just like this:
    <a href='script.cgi?param1=value1&param2=value2'>Link text</a>


    Hot Pastrami
Re: javascript
by fpi (Monk) on Mar 16, 2001 at 05:28 UTC
    Just to elaborate on Hot Pastrami's post: you can execute a cgi script with an html link the same way you can provide an html link to another html page, or any other file within your webserver document root.

    You didn't say if you are already able to get this cgi script working in the first place, because there's a few important things that have to be done first in order for this to work, regardless of the server's platform:
    -Make sure the cgi script has executable permission and ownership
    -Make sure the script resides in directory deemed by the webserver to contain executable scripts
    -Make sure ".cgi" is an extension recognized by the webserver as a file to be executed
    -Make sure the script is ready to output to a browser

    If any of these are not true, then you will get a server error. The reason why I point all this out is because I had to learn it the hard way.

    One more tip, especially if you are working with a cross-platform remote server - make sure the script is transferred as ascii and saved in the text format of the server's platform.

    By the way, what did this have to do with javascript?
Re: javascript
by faerloche (Sexton) on Mar 16, 2001 at 08:30 UTC
    You can use an onClick or onChange to execute a cgi-script by using redirection:
    <HTML> <HEAD></HEAD> <BODY> <SCRIPT Language="Javascript"> function go_to() { document.location = "http://your-cgi-script.cgi"; } </SCRIPT> <IMG SRC="BLAH" onClick="go_to()"> </BODY>
    Follow the good advice the others have given you for the script at the other end and you should be good to go.
Re: javascript
by willdooUK (Beadle) on Apr 02, 2001 at 15:04 UTC
    Slightly off-topic (wot no perl), but I'm sure someone can make use of this.

    I've written a couple of Javscript modules (with API-like interfaces) that might be useful to cgi guys. In particular there's one called query.js which implements a Query class; this lets you interact and code with the query string using three or four simple commands, eg:
    var query = new Query(document.location.search); var names = query.getNames(); var pName = document.forms[0].pName.value; var pValue = document.forms[0].pValue.value; query.addParameter(pName, pValue); alert(query.toQueryString());
    Using this interface makes it a lot easier to collect parameters and hit a cgi script. It also makes it easy to send data from one webpage to the next (so forms can be spread over two pages, for example).

    This script is online at www.javascriptguru.co.uk (along with examples) if you're interested.

    willdooUK
    --------------

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