☰

Don't fuck with my scroll!!!

Whenever the user scrolls using the mouse wheel it will disable all methods to programmatically scroll for 1000 ms. Basically preventing websites to implement custom scrolling behaviors like smooth scrolling.

目前为 2019-04-11 提交的版本。查看 最新版本。

// ==UserScript==
// @name         Don't fuck with my scroll!!!
// @namespace    http://github.com/YePpHa
// @version      1.0
// @description  Whenever the user scrolls using the mouse wheel it will disable all methods to programmatically scroll for 1000 ms. Basically preventing websites to implement custom scrolling behaviors like smooth scrolling.
// @author       Jeppe Rune Mortensen <[email protected]>
// @match        http://*/*
// @match        https://*/*
// @grant        none
// @run-at       document-start
// ==/UserScript==

(function() {
  'use strict';

  var inject = function() {
    var timeout = 1000;

    function init() {
      function enableScrolling() {
        window.scrollBy = _scrollBy;
        window.scrollTo = _scrollTo;
        Object.defineProperty(scrollingElement, "scrollTop", {
          configurable: true,
          enumerable: false,
          get: _scrollTopGetter,
          set: _scrollTopSetter
        });
      }

      function disableScrolling() {
        window.scrollBy = _void;
        window.scrollTo = _void;
        Object.defineProperty(scrollingElement, "scrollTop", {
          configurable: true,
          enumerable: false,
          get: _scrollTopGetter,
          set: _void
        });
      }
      function scrollHandler() {
        disableScrolling();

        clearTimeout(timer);
        timer = setTimeout(enableScrolling, timeout);
      }
      var scrollingElement = document.scrollingElement;

      var _void = function() {};
      var _scrollBy = window.scrollBy;
      var _scrollTo = window.scrollTo;
      var _scrollTopGetter = scrollingElement.__lookupGetter__("scrollTop");
      var _scrollTopSetter = scrollingElement.__lookupSetter__("scrollTop");
      
      var timer;

      scrollingElement.addEventListener("wheel", scrollHandler, { passive: false, capture: true });
      window.addEventListener("wheel", scrollHandler, { passive: false, capture: true });
      scrollingElement.addEventListener("mousewheel", scrollHandler, { passive: false, capture: true });
      window.addEventListener("mousewheel", scrollHandler, { passive: false, capture: true });
    }

    function isReady() {
      return document.readyState === "complete" || document.readyState === "interactive";
    }

    function handleReadyStateChange() {
      if (isReady()) {
        document.removeEventListener("readystatechange", handleReadyStateChange, false);
        init();
      }
    }
    
    if (isReady()) {
      init();
    } else {
      document.addEventListener("readystatechange", handleReadyStateChange, false);
    }
  };

  var script = document.createElement("script");
  script.type = "text/javascript";
  script.appendChild(document.createTextNode('(' + inject.toString() + ')();'));

  (document.body || document.head || document.documentElement).appendChild(script);
})();