Mozilla Firefox extension

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I have a problem, my extension does not work at all, first of all, I will explain to you what it serves:

This extension when active makes the insertion of data in a form of a given web site, receiving this data through a socket of an application made in java.

Google Chrome works perfectly, with a 2-second delay for every item added to the form (this started happening recently, I don’t know why), so with all the tests I’ve done, it’s because of some update of its version.

But changing from water to wine, I did not come for Chrome but for Mozilla, I will provide the extension and I am waiting for help.

Manifest:

{
    "name": "SGIR - Extensão",
    "manifest_version": 2,
    "version": "1.1",
    "description": "Preencher formulários",
    "browser_action": {
        "default_popup": "popup.html"
    },
    "permissions": [
        "contextMenus",
        "//Determinado site da web"
    ],
    "content_scripts": [{
        "js": ["funcao.js"],
        "matches": ["//Determinado site da web"]
    }]
}

Function:

var ws = new WebSocket("ws://localhost:30000");
var itens = [];

ws.onopen = function ()
{
    ws.send("");
   // alert("Mensagem enviada...");
};

ws.onmessage = function (evt)
{
    var received_msg = evt.data;
    itens.push(received_msg);

    var ni = document.getElementById("NI");
    ni.value = itens[0].toString();

    var codigoacesso = document.getElementById("CodigoAcesso");
    codigoacesso.value = itens[1].toString();

    var senha = document.getElementById("Senha");
    senha.value = itens[2].toString();

    itens.splice(0,itens.length);
};

ws.onclose = function ()
{
    // websocket is closed.
    //alert("Conexão fechada...");
};

window.onbeforeunload = function (event) {
    socket.close();
};

Scriptjs:

/* global browser */

browser.tabs.query({
    active: true,
    windowType: "normal",
    currentWindow: true
}, function (tab) {
    browser.tabs.executeScript(tab[0].id, {
        "file": "funcao.js"
    });
});

Popup:

<!doctype html>
<html>
    <head>
        <script src="scriptjs.js"></script>
    </head>
    <body>

        Programa criado por @netoschneider

    </body>
</html>
javascript firefox firefox-extension

  • What are the symptoms?

  • The extension does not work at all in Mozilla, and in google Chrome, I’m having a delay of 3, 2 seconds for the information to appear in the form @Pabloalmeida

  • Okay, but it doesn’t work because? What’s the mistake?

  • So that’s exactly what I want to find out. I do not see problems in the code, in Chrome it works, but generates delay and it came out of nowhere, I did not make any changes in the code, and in Mozilla I do not know why the extension does not work.

  • Have you looked at the browser console?

  • Can you guide me? How to debbug Mozilla to see the extension error?

  • Press F12 to open the console. There will appear the errors and also have a tab with a debugger if you want to follow the execution step-by-step.

  • In google Chrome it generates an exception: "Uncaught Typeerror: Cannot read Property 'toString' of Undefined at Websocket.ws.onmessage ", but nothing that compromises execution in the form, with delay as I said, and in Mozilla generates nothing, it just doesn’t work. @Pabloalmeida

  • In Mozilla the extension works, what does not work is the websocket connection, simply does not connect to the server, through Chrome the same extension connects, but with Mozilla does not.

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