Stop websites from hijacking keyboard shortcuts.
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// ==UserScript==
// @name Disable website keyboard hooks
// @description Stop websites from hijacking keyboard shortcuts.
// @author Isaac Levy, Jonas Singe
// @run-at document-start
// @include *
// @grant none
// @version 0.0.2
// @namespace https://github.com/isaacl/keycodeScript
// ==/UserScript==
// Disable these keys when no keyboard modifier is pressed
var std_keycodes = new Set([
// Add keycodes as desired
37, 38, 39, 40 // Arrow Keys.
]);
// Disable these keys when Meta key is pressed.
var meta_keycodes = new Set([
// Add keycodes as desired
70 // Ctrl + F
]);
// Disable these keys when Alt key is pressed.
var alt_keycodes = new Set([
// Add keycodes as desired
83 // Alt + S
]);
// Don't change below this line.
var isMac = navigator.platform.indexOf('Mac') >= 0;
document.addEventListener('keydown', function(e) {
var keycode_set;
if (isMac ? e.metaKey : e.ctrlKey) {
keycode_set = meta_keycodes;
} else if (e.altKey) {
keycode_set = alt_keycodes;
} else {
keycode_set = std_keycodes;
}
if (keycode_set.has(e.keyCode)) {
e.stopImmediatePropagation();
}
return false;
});