Passing javascript variables to Perl

12 New Member

Hi

I have a html page with javascript in it that assigns a set of coordinates to javascript variables. The question I have is how can I then send these variables to a Perl CGI script using a submit on a html form.

An example of some of the code below:

Expand|Select|Wrap|Line Numbers

 
    var map;

    var geocoder = null;

    var addressMarker;

    var originpoint = null;
 
....................
 
function showAddress(address) {

      if (geocoder) {

        geocoder.getLatLng(address,

          function(point1) {

            if (!point1) {

              alert(address + " not found");

            } else {

              if (addressMarker) {

                map.removeOverlay(addressMarker);

              }

              addressMarker = new GMarker(point1);

              map.setCenter(point1, 15);

              map.addOverlay(addressMarker);

              originpoint = point1;

              alert("origin is now: "+originpoint+" destination is now: "+destinationpoint);

            }

          }

        );

      }

    }
 
<body onload="load()" onunload="GUnload()">

    <form action="#" onsubmit="showAddress(this.address.value); return false">

      <p>

 Origin:<input type="text" size="50" id="addressInput" name="address" value="London, UK" />

        <input type="submit" value="Show Origin" />

      </p>

    </form>

Now I want to be able to store the variable "originpoint" and using another form to submit it to the perl CGI script. Any ideas?

Jul 20 '07 #1

Subscribe Reply

5446

Harch84

New Member

Can anyone suggest an answer to this? I was thinking about some sort of hidden input form but am not sure how to implement it or how it would work?

Jul 20 '07 #2

pbmods

5,821

Recognized Expert Expert

Heya, Harch.

Easiest way to do it is to put them in the form. Create a couple of hidden inputs, then assign their values in the form's onsubmit.

Jul 21 '07 #3

Harch84

New Member

Hi Pbmods

I tried to do what you said but seem to be passing just the name of the variable not the actual value of the variable?

Expand|Select|Wrap|Line Numbers

 
    <form action="http://morar.geos.ed.ac.uk/~s0679212/cgi_bin/sql_test.pl" method="POST" onSubmit="Origin">

    <input type="hidden" name="Origin" value="originpoint">

    <input type="Submit" value="Go!">

    </form>

In the perl script this returns the text "originpoint" instead of the actual value of the variable originpoint from javascript. What am I doing wrong?

Jul 21 '07 #4

pbmods

5,821

Recognized Expert Expert

Heya Harch.

You have to use the onsubmit handler for your form and then use JavaScript to populate the form values:

Expand|Select|Wrap|Line Numbers

<form ... onsubmit="return setVars();">

Expand|Select|Wrap|Line Numbers

 
function setVars()

{

    document.getElementById('idOfInput') = variableName;

    .

    .

    .

    return true;

}

Jul 21 '07 #5

Harch84

New Member

Im really sorry about this but I still seem to be getting errors in my script preventing the javascrip variable to be passed to perl. I have used the advice given here and have this code:

Expand|Select|Wrap|Line Numbers

 
    <script type="text/javascript">

    //<![CDATA[
 
    function setVars()

        {

            document.getElementById('orig') = originpoint;

            return true;

        }
 
    //]]>

    </script>
 
<body onload="load()" onunload="GUnload()">
 
........................ // other forms go here that use geocoder
 
<form action="http://morar.geos.ed.ac.uk/~s0679212/cgi_bin/sql_test.pl" method="POST" onsubmit="return setVars();">

<input type="hidden" id="orig" name="Origin">

<input type="Submit" value="Go!">

</form>
 
  </body>

</html>

Now the error I get is when I click on the submit button on the web page and it says that on the line 90 char 4 which is:

Expand|Select|Wrap|Line Numbers

  
88    function setVars()

89    {

90        document.getElementById('orig') = originpoint;

91        return true;

92    }

The error says that there is a "Wrong number of arguements or invalid property assignment".??

As you can tell im no javascript expert so any help would be massivly appreciated and im sure its just something simple that I cant see but is obvious to you all. Thanks in advance

Jul 22 '07 #6

pbmods

5,821

Recognized Expert Expert

Heya, Harch.

You're getting close.

In that statement, you are trying to set the *element* to originpoint, which is what's giving JavaScript such a bellyache.

Instead, you want to set the element's *value* to originpoint:

Expand|Select|Wrap|Line Numbers

 
 function setVars()

{

    document.getElementById('orig').value = originpoint;

    return true;

}

Jul 22 '07 #7

Harch84

New Member

Heya Pbmods

That was the final part of the puzzle thanks so much for your help! Works perfectly now I almost cant believe it :-)

All the best

Harch

Jul 22 '07 #8

pbmods

5,821

Recognized Expert Expert

Heya, Harch.

Glad to hear you got it working! Good luck with your project, and if you ever need anything, post back anytime :)

Jul 22 '07 #9

Similar topics

2762

Passing data from PHP to Perl?

by: google_nospam | last post by:

Thanks in advance for any help. I'm looking for a way to pass data from php to perl. Basically, I want to take some dynamic data from a database, mixed with user input, then reformat it to make a...

PHP

9568

Passing Variables from One Perlscript to Another

by: Joe | last post by:

I am trying to write a Perlscript to be used with some HTML pages. Here is how it works: 1.. The first HTML page has a form which requests for user input. Then it passes the QUERY_STRING...

Perl

3594

Passing variables from Javascript to ASP

by: Consuelo Guenther | last post by:

Hello, I am having problems with passing variables between pages. I have the following: First asp page has the function: -----------------------------------------------------------------------...

ASP / Active Server Pages

12852

Javascript intrepreting an apostrophe as a delimiter while displaying a perl variable

by: Jeanne | last post by:

I am working on a cgi script that is suppose to pop-up a javascript box from the following perl variables:$TodayDate, $LinkCity, $LinkState. I recently encountered a problem with the $LinkCity...

Javascript

2763

My Javascript Code will not run from within a Perl/CGI program ??

by: Tommo | last post by:

Hello All, I am a still learning so be easy on me. I am trying to get some code to work that is using JS and Perl/CGI, I am using AS Perl and an Apache Server on XP as the webserver. Can anyone...

Javascript

14902

passing values in a setTimeout function

by: domeceo | last post by:

can anyone tell me why I cannot pass values in a setTimeout function whenever I use this function it says "menu is undefined" after th alert. function imgOff(menu, num) { if (document.images) {...

Javascript

45464

Script in an IFRAME can not call functions defined in the parent document?

by: Dave Hammond | last post by:

In document "A.html" I have defined a function and within the document body have included an IFRAME element who's source is document "B.html". In document "B.html" I am trying to call the function...

Javascript

3278

Passing a variable's value from javascript to a perl script

by: satish2112 | last post by:

Hi, I have a text-area which contains values from mysql database and 2 buttons, Edit and Update. When I click on the Edit button, I can edit the text-area (initially non-editable). After this,...

Javascript

5871

Passing variables from a perl script to calling batch script

by: veeraiah | last post by:

Hi, I am new to PERL Scripting, i need your help with one of the problem i am having. I am having a PERL Script which has two variables $CurMon and $PriorMon. a Windows batch script calls this...

Perl

7126

What is ONU?

by: marktang | last post by:

ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...

General

7168

Problem With Comparison Operator <=> in G++

by: Oralloy | last post by:

Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...

C / C++

7210

Maximizing Business Potential: The Nexus of Website Design and Digital Marketing

by: jinu1996 | last post by:

In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...

Online Marketing

6891

The easy way to turn off automatic updates for Windows 10/11

by: Hystou | last post by:

Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...

Windows Server

5465

AI Job Threat for Devs

by: agi2029 | last post by:

Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing,...

Career Advice

4595

Couldn’t get equations in html when convert word .docx file to html file in C#.

by: conductexam | last post by:

I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and...

C# / C Sharp

3096

Trying to create a lan-to-lan vpn between two differents networks

by: TSSRALBI | last post by:

Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The...

Networking - Hardware / Configuration

3087

Windows Forms - .Net 8.0

by: adsilva | last post by:

A Windows Forms form does not have the event Unload, like VB6. What one acts like?

Visual Basic .NET

1424

transfer the data from one system to another through ip address

by: 6302768590 | last post by:

Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated ...

C# / C Sharp