Custom spacebar scroll distance
// ==UserScript==
// @name scroll
// @version 1.0.0
// @description Custom spacebar scroll distance
// @match *://*/*
// @namespace https://greasyfork.org/users/1524800
// ==/UserScript==
(function () {
'use strict';
const SCROLL_PERCENT = 40; // Percentage of viewport height to scroll
document.addEventListener('keydown', (e) => {
if (e.code !== 'Space' || e.target !== document.body) return;
e.preventDefault();
window.scrollBy({
top: (e.shiftKey ? -1 : 1) * window.innerHeight * SCROLL_PERCENT / 100,
behavior: 'smooth',
});
});
})();