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Disable single key keyboard shortcuts

Stop websites from hijacking Firefox quick search key "/", and Escape key

  1. // ==UserScript==
  2. // @name           Disable single key keyboard shortcuts
  3. // @description    Stop websites from hijacking Firefox quick search key "/", and Escape key
  4. //
  5. // @run-at         document-start
  6. // @include        *
  7. // @grant          none
  8. // @inject-into    auto
  9. // @version        2019.12.31.1600
  10. // @namespace      https://greasyfork.org/users/30
  11. // ==/UserScript==
  12. /* jshint esversion: 6 */
  13.  
  14. //https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key
  15. const keyValues = new Set(['/','Escape']); // Check on https://keycode.info/
  16.  
  17. const preventKey = function(e){
  18.     if (keyValues.has(e.key)){
  19.         e.stopImmediatePropagation();
  20.     }
  21.     //console.log('Event: type: %s, key: %s, has: %s', e.type, e.key, keyValues.has(e.key));
  22. };
  23.  
  24. // Slash search on https://github.com/
  25. document.addEventListener('keydown', preventKey, {passive: false, capture: true});
  26. // Slash search on https://forum.manjaro.org/
  27. // `capture` for Slash search on https://phabricator.services.mozilla.com/
  28. document.addEventListener('keypress', preventKey, {passive: false, capture: true});
  29. // I need to find test case
  30. //document.addEventListener('keyup', preventKey);