Issue executing Perl CGI from JavaScript

Question

How do I get my Perl script to execute from JavaScript called from an HTML form's 'action' attribute?

I am using scripts built by other people mostly, and the basic gist of it is that I need to call the CGI script from the JS function.

I have to do it this way because it was the best I could come up with based on whether or not the device is mobile.

I need to pass some checkboxes to the Perl script and return some files based on the checkbox states. I know the Perl script works perfectly without having to execute the JavaScript, but I don't know how to check if a device is mobile or not in Perl, and I do in JS.

All I need is to execute the CGI script, passing it the same information as if it was being called directly from the form, but it does nothing.

Here is my JavaScript:

function downloadFiles(){
    var isMobile = function(){
        try {document.createEvent("TouchEvent"); return true;}
        catch(e) {return false;}
    }
    && (/Mobi/i.test(navigator.userAgent));
    if(!isMobile){
        $.ajax({
            type:"Post",
            url:"https://www.mywebsite.com/cgi-bin/myPerlScript.cgi",
            success:function(msg){$("#myHtmlForm").html(msg.d);}
        });
    }
}

I don't rightly know what 'msg' or its property 'd' is, and I don't even know if my form should be the element where it is. So what I am missing here?

Answer 1

It turns out that I wasn't building the ajax statement completely or correctly. I didn't add any data that I needed to pass into the CGI script.

Here's the ajax statement I ended up with:

$.ajax({
    type:"POST",
    url:"/cgi-bin/myPerlScript.cgi",
    data:$("#myHtmlForm").serialize(),
    error:function badCall(){location.href="https://www.mywebsite.com/error.html";}
});

Thank you @ikegami, @mkHun, @simbabque, and @DaveCross!