Backspace goes back

Backspace key = "go back" as it was before Chrome 52. And Shift+Backspace goes forward.

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name          Backspace goes back
// @include       *
// @description   Backspace key = "go back" as it was before Chrome 52. And Shift+Backspace goes forward.
// @version       2.0.0
// @author        wOxxOm
// @namespace     wOxxOm.scripts
// @license       MIT License
// @run-at        document-start
// @grant         none
// ==/UserScript==

addEventListener('keyup', e => {
  if (e.which !== 8 || e.altKey || e.metaKey || e.ctrlKey) {
    return;
  }
  let el = document;
  while (el && (el = el.activeElement)) {
    if (el.isContentEditable ||
        el.localName == 'input' &&
          /^(text|color|date*|email|month|number|password|range|search|tel|time|url|week)$/.test(el.type) ||
        el.localName == 'textarea') {
      return;
    }
    el = el.shadowRoot;
  }
  e.preventDefault();
  el = e.shiftKey ? 'forward' : 'back';
  if (window === top) history[el]();
  else top.postMessage(GM_info.script.name + el, '*');
}, true);

if (window === top) {
  addEventListener('message', e => {
    if (`${e.data}`.startsWith(GM_info.script.name)) {
      e.stopPropagation();
      e.stopImmediatePropagation();
      history[e.data.slice(GM_info.script.name.length)]();
    }
  }, true);
}