Why this simple Greasemonkey script is not working for me / ? I mean that instead of getting successful response I get error while making an ajax call.

// ==UserScript==
// @name        _Starter AJAX request in GM, TM, etc.
// @match       *://php/*
// @grant       GM_xmlhttpRequest
// @connect     php
// ==/UserScript==

GM_xmlhttpRequest ( {
    method:     'GET',
    url:        '/',
    onload:     function (responseDetails) {
                    // DO ALL RESPONSE PROCESSING HERE...
                                alert(responseDetails);
                    console.log (
                        "GM_xmlhttpRequest() response is:\n",
                        responseDetails.responseText.substring (0, 80) + '...'
                    );
                }
} );

I found the script here and it seems it worked well for someone earlier.

I'm using Firefox 59.0.1 and Greasemonkey 4.3

Restarting Firefox and reinstalling script didn't help.

Why this simple Greasemonkey script is not working for me https://jsfiddle/pghnsw8z/1/ ? I mean that instead of getting successful response I get error while making an ajax call.

// ==UserScript==
// @name        _Starter AJAX request in GM, TM, etc.
// @match       *://php/*
// @grant       GM_xmlhttpRequest
// @connect     php
// ==/UserScript==

GM_xmlhttpRequest ( {
    method:     'GET',
    url:        'http://php/',
    onload:     function (responseDetails) {
                    // DO ALL RESPONSE PROCESSING HERE...
                                alert(responseDetails);
                    console.log (
                        "GM_xmlhttpRequest() response is:\n",
                        responseDetails.responseText.substring (0, 80) + '...'
                    );
                }
} );

I found the script here https://stackoverflow./a/42592356/9483949 and it seems it worked well for someone earlier.

I'm using Firefox 59.0.1 and Greasemonkey 4.3

Restarting Firefox and reinstalling script didn't help.

• javascript
• greasemonkey
• greasemonkey-4

• 2 GM4 has abandoned the classic API, see their documentation, now it's GM.* – woxxom Commented Mar 19, 2018 at 15:17
• @wOxxOm In this case I get GM.xmlhttpRequest is not a function – Peter Commented Mar 19, 2018 at 15:39
• 1 The new API function uses uppercase H. – woxxom Commented Mar 19, 2018 at 16:14
• @wOxxOm Perfect! thank's a lot. – Peter Commented Mar 19, 2018 at 16:20
• 1 Peter, as per GM's own remendation, you should switch to Tampermonkey or Violentmonkey. The new Greasemonkey is severely degraded, not backwards patible, and has significantly less utility than the other engines. – Brock Adams Commented Mar 19, 2018 at 18:56

1 Answer 1

The doc : https://wiki.greasespot/GM.xmlHttpRequest

The GM API was changed. You have to use xmlHttpRequest property of GM class, it is patibility: GM 4.0+.

Replace GM_xmlhttpRequest by : GM.xmlHttpRequest like this :

// ==UserScript==
// ...
// @grant         GM.xmlHttpRequest
// ==/UserScript==

GM.xmlHttpRequest({