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YouTube Usability

Disables frequently mistyped shortcuts (e.g. 0-9 number keybindings) and auto-looping on shorts.

当前为 2024-03-31 提交的版本，查看 最新版本。

// ==UserScript==
// @name YouTube Usability
// @description  Disables frequently mistyped shortcuts (e.g. 0-9 number keybindings) and auto-looping on shorts.
// @license MIT
// @icon https://m.youtube.com/static/apple-touch-icon-114x114-precomposed.png
// @namespace michaelsande.rs
// @version 2024.03.30
// @match https://www.youtube.com/*
// @match https://m.youtube.com/*
// @run-at document-start
// ==/UserScript==

// Tested on Greasemonkey and Violentmonkey for Firefox, and Userscripts for Safari.
(() => {
  "use strict";
  const beforeLoad = () => {
    const ALLOWED_MODIFIER_KEYS = ["Alt", "Control", "Meta", "OS"];
    const DISABLED_KEYS = new Set("0123456789kjl".split("").concat(["Home", "End"]));

    window.addEventListener(
      "keydown",
      event => {
        if (
          DISABLED_KEYS.has(event.key) &&
          !ALLOWED_MODIFIER_KEYS.some(event.getModifierState.bind(event)) &&
          !event.isComposing
        ) {
          event.stopImmediatePropagation();
        }
      },
      true
    );

    if (document.readyState === "complete") {
      afterLoad();
    } else {
      window.addEventListener("load", afterLoad);
    }
  };

  const afterLoad = () => {
    disableShortLooping();
    new MutationObserver(disableShortLooping).observe(document, {
      attributes: false,
      childList: true,
      subtree: true,
    });
  };

  const disableShortLooping = () => {
    document.querySelector("#shorts-player video")?.removeAttribute("loop");
  };

  beforeLoad();
})();