Back and Forward, Finally… A userscript for Safari that enables mouse buttons for navigating back and forward.

BFF.user.js

// ==UserScript==
// @name         BFF
// @description  Back and Forward, Finally… A userscript for Safari that enables mouse buttons for navigating back and forward.
// @namespace    mailto:crazyrems@hey.com
// @author       crazyrems
// @version      1
// @match        *://*/*
// @grant        none
// ==/UserScript==

document.addEventListener('mousedown', function(event) {
    if (event.buttons & 8) {
        // Bouton "Précédent"
        window.history.back();
    } else if (event.buttons & 16) {
        // Bouton "Suivant"
        window.history.forward();
    }
});