Sudokumood Hotkeys

Sudokumood Hotkeys.user.js

// ==UserScript==
// @name         Sudokumood Hotkeys
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Add hotkeys to sudokumood.com
// @author       Anna Oake
// @match        *://*.sudokumood.com/*
// @grant        none
// ==/UserScript==

(function () {
  "use strict";

  const hotkeys = {
    0: "#timer", // just something to remove focus from the board
    "-": "#pauseButton",
    "=": "#undo",
  };

  const elements = Object.fromEntries(
    Object.entries(hotkeys).map(([k, v]) => [k, document.querySelector(v)]),
  );

  window.addEventListener(
    "keydown",
    (e) => {
      elements[e.key]?.click();
    },
    true,
  );
})();