What is the best way to send a JavaScript array to a Perl script using AJAX?

Question

What is the best way to send a JavaScript array to a Perl script using AJAX?

Is it possible to convert a JavaScript array passed via AJAX into a Perl array?

Accessing in Perl:

@searchType = $cgi->param('searchType');
print @searchType[0];

Result:

employee,admin,users,accounts

It appears that the first value in the Perl array (@searchType[0]) contains all the elements of the JavaScript array as a single string.

javascript ajax arrays perl

Answer 1

Answer №1

While this question may be outdated, it could still be of interest to someone else browsing through similar topics.

To pass a JavaScript array to Perl via Ajax, one method is to convert the array into a JSON object using "JSON.stringify(jsArray);" and then decode it in the Perl script. Below is a simple example where the first item of the array is returned through an alert.

index.html:

<!DOCTYPE html>
<html>
    <head>
        <title>Testing ajax</title> 
        <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
        <script>

            $(document).ready(function() {

                $("#test").click(function(){
                    var jsArray = ["employee", "admin", "users", "accounts"];
                    var jsArrayJson = JSON.stringify(jsArray);
                    $.ajax({
                            type: 'POST',
                            url: '/cgi-bin/ajax/stackCGI/processJsArray.pl', //change the path
                            data: { 'searchType': jsArrayJson},
                            success: function(res) {alert(res);},
                            error: function() {alert("did not work");}
                    });
                })

            })

        </script>
    </head>
    <body>
       <button id="test" >Push</button>

    </body>
</html>

processJsArray.pl

#!/usr/bin/perl

use strict;
use warnings;

use CGI;
use JSON;

my $q = CGI->new;

my @myJsArray = @{decode_json($q->param('searchType'))}; #read the json object in as an array

print $q->header('text/plain;charset=UTF-8'); 
print "first item:"."\n";
print $myJsArray[0]."\n";

Answer 2

While this question may be outdated, it could still be of interest to someone else browsing through similar topics.

To pass a JavaScript array to Perl via Ajax, one method is to convert the array into a JSON object using "JSON.stringify(jsArray);" and then decode it in the Perl script. Below is a simple example where the first item of the array is returned through an alert.

index.html:

<!DOCTYPE html>
<html>
    <head>
        <title>Testing ajax</title> 
        <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
        <script>

            $(document).ready(function() {

                $("#test").click(function(){
                    var jsArray = ["employee", "admin", "users", "accounts"];
                    var jsArrayJson = JSON.stringify(jsArray);
                    $.ajax({
                            type: 'POST',
                            url: '/cgi-bin/ajax/stackCGI/processJsArray.pl', //change the path
                            data: { 'searchType': jsArrayJson},
                            success: function(res) {alert(res);},
                            error: function() {alert("did not work");}
                    });
                })

            })

        </script>
    </head>
    <body>
       <button id="test" >Push</button>

    </body>
</html>

processJsArray.pl

#!/usr/bin/perl

use strict;
use warnings;

use CGI;
use JSON;

my $q = CGI->new;

my @myJsArray = @{decode_json($q->param('searchType'))}; #read the json object in as an array

print $q->header('text/plain;charset=UTF-8'); 
print "first item:"."\n";
print $myJsArray[0]."\n";

Answer 3

Answer №2

Make sure to format it as

param1=value&param2=another-value

.

let filters = ["price", "category", "brand"];
let paramName = "filters";
for (let i = 0; i < filters.length; i++) {
    filters[i] = encodeURIComponent(paramName) + "=" + encodeURIComponent(filters[i]);
}
let paramsString = filters.join("&");

After that, you can include the paramsString in your URL or post request.

Answer 4

Make sure to format it as

param1=value&param2=another-value

.

let filters = ["price", "category", "brand"];
let paramName = "filters";
for (let i = 0; i < filters.length; i++) {
    filters[i] = encodeURIComponent(paramName) + "=" + encodeURIComponent(filters[i]);
}
let paramsString = filters.join("&");

After that, you can include the paramsString in your URL or post request.

What is the best way to send a JavaScript array to a Perl script using AJAX?

Answer №1

Answer №2

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