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Disable Confirmation Dialog When Leaving A Web Page

Disable confirmation dialog when leaving a web page

  1. // ==UserScript==
  2. // @name        Disable Confirmation Dialog When Leaving A Web Page
  3. // @namespace   DisableConfirmationDialogWhenLeavingAWebPage
  4. // @description Disable confirmation dialog when leaving a web page
  5. // @license     GNU AGPLv3
  6. // @author      jcunews
  7. // @match       *://*/*
  8. // @version     1.0.5
  9. // @grant       none
  10. // @run-at      document-start
  11. // ==/UserScript==
  12.  
  13. (() => {
  14.   var d = Object.getOwnPropertyDescriptor(window, "onbeforeunload");
  15.   d.set = function(f) {
  16.     return f;
  17.   };
  18.   Object.defineProperty(window, "onbeforeunload", d);
  19.   d = EventTarget.prototype.addEventListener;
  20.   EventTarget.prototype.addEventListener = function(typ) {
  21.     if (typ.toLowerCase() !== "beforeunload") return d.apply(this, arguments);
  22.   };
  23. })();