mylist-list

guroshi

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

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

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

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

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

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

(I already have a user script manager, let me install it!)

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.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         mylist-list
// @namespace    twitter.com/neon_uriel
// @version      2025-02-03
// @description  guroshi
// @author       neon
// @match        https://www.nicovideo.jp/watch/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=nicovideo.jp
// @run-at      document-start
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    // 監視対象のノード (body 全体を監視)
    const targetNode = document.body;
    const url = new URL(window.location.href);
    const smNumber = url.pathname.substring(url.pathname.lastIndexOf('/') + 1);

    // MutationObserver のコールバック関数
    const observerCallback = function(mutationsList, observer) {
        for (let mutation of mutationsList) {
            if (mutation.type === 'childList') {
                let menu = document.querySelector('#menu\\:\\:rk\\:\\:content');
                if (menu && !document.getElementById('custom-button')) {
                    addButton(menu);
                    observer.disconnect(); // 1回追加したら監視を終了
                }
            }
        }
    };

    // ボタンを追加する関数
    function addButton(target) {
        let button = document.createElement('button');
        button.id = 'custom-button';
        button.innerText = 'マイリスト一覧';
        button.style.margin = '10px';
        button.style.padding = '5px 10px';
        button.style.cursor = 'pointer';


        // ボタンのクリックイベント
        button.addEventListener('click', function() {
            console.log('ボタンがクリックされました');
            window.open("https://www.nicovideo.jp/openlist/" + smNumber, "_blank");
        });

        // 指定の要素にボタンを追加
        target.appendChild(button);
        console.log('ボタンを追加しました');
    }

    // MutationObserver のオプション (子ノードの変更を監視)
    const observerOptions = { childList: true, subtree: true };

    // MutationObserver を作成
    const observer = new MutationObserver(observerCallback);

    // 監視を開始
    observer.observe(targetNode, observerOptions);
})();