Kemono Button fantia

// ==UserScript==
// @name         Kemono fantia button
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Add kemono party button to fantia page.
// @author       mbahArip
// @match        https://fantia.jp/fanclubs/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=fantia.jp
// @grant        none
// ==/UserScript==

function addButton(){
        const fantiaID = parseInt(window.location.href.split('fanclubs/')[1]);
        const kemonoURL = `https://kemono.party/fantia/user/${fantiaID}`

        let buttonElement = document.createElement('a');
        buttonElement.className = 'btn btn-success btn-block';
        buttonElement.href = kemonoURL
        buttonElement.innerText = 'Kemono.party';

        document.querySelector('.fanclub-btns').append(buttonElement);

}


(function() {
    'use strict';
    addButton();
})();