// ==UserScript== // @name Prevent Spacebar Doing Page Down // @author Jefferson "jscher2000" Scher // @namespace JeffersonScher // @description When the Spacebar key is received outside a text entry area, discard it // @include * // @version 1.0 // @grant none // @copyright Copyright 2018 Jefferson Scher // @license BSD 3-clause // ==/UserScript== function PSDPD_KeyCheck(key){ // Don't modify text editing if (key.target.nodeName == "INPUT" || key.target.nodeName == "TEXTAREA" || key.target.nodeName == "SELECT") return; if (key.target.hasAttribute("contenteditable") && key.target.getAttribute("contenteditable") == "true") return; // Don't modify certain combinations if (key.ctrlKey || key.altKey || key.metaKey) return; // If it's a space character, kill the event if (key.key == ' '){ key.stopPropagation(); key.preventDefault(); return false; } } // Monitor the keydown event document.addEventListener('keydown', PSDPD_KeyCheck);