Gitbook.user.js

// ==UserScript==
// @name        Gitbook
// @match     https://docs.openbrush.app/*
// @description Adds edit link to gitbook pages on https://docs.openbrush.app/
// @version     0.1
// @match       https://www.tampermonkey.net/index.php?version=4.13.6136&ext=fire&updated=true
// @icon        https://www.google.com/s2/favicons?domain=tampermonkey.net
// @grant       none
// ==/UserScript==

(function() {
    'use strict';

    let el = document.body.appendChild(document.createElement('a'));
    el.setAttribute("id", "quickgblink");
    el.innerText = "EDIT";
    el.href = "#";
    el.style.position = "fixed";
    el.style.top = "0";
    el.style.zIndex = "1000";
    el.style.right = "0";
    el.style.width = "4em";
    el.style.height = "2em";
    el.style.border = "1px solid black";
    el.style.padding = "3px";
    el.style.textAlign = "center";
    var updateLink = function()
    {
        var path = document.location.href;
        path = path.toString().replace("https://docs.openbrush.app/", "");
        el.href="https://app.gitbook.com/o/-Mikdl01-6Jga6QTk0rK/s/-Mikdwm98p33AibfiSqN/" + path;
    };
    el.onmousemove = updateLink;

})();