Rig Google Coinflip

title

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Rig Google Coinflip
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  title
// @author       Colin Simon-Fellowes
// @match        https://www.google.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=mozilla.org
// @grant        none
// @license      MIT
// ==/UserScript==

(function() {
    'use strict';
    // Check if the page contains a coinflip game
    let is_coinflip = (document.querySelector("div[data-parent-funbox='Flip a coin']") != null);
    if (!is_coinflip){return 0;}

    // Functions to overload Math.random with
    let all_heads = function(){return 0;}
    let all_tails = function(){return 1;}
    let rand = Math.random; // Keep a back-up of Math.random for when we overwrite it

    function processKey(e) {
        switch (e.key.toLowerCase()){
            case 'h':
                window.Math.random = all_heads;
                console.log("To Heads!"); // debug
                break;
            case 't':
                window.Math.random = all_tails;
                console.log("To tails!"); // debug
                break;
            case 'r':
                window.Math.random = rand;
                console.log("Back to random!"); // debug
                break;
        }
    }

    document.addEventListener("keydown", processKey);

    // Your code here...
})();