Sleek YouTube Downloader (MP3/MP4)

A simple tool that adds YouTube-style buttons for MP3/MP4 conversion. Lighter than most download scripts.
目前为 2022-01-11 提交的版本。查看最新版本。
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// ==UserScript==
// @name         Sleek YouTube Downloader (MP3/MP4)
// @namespace    https://github.com/thisismy-github
// @description  A simple tool that adds YouTube-style buttons for MP3/MP4 conversion. Lighter than most download scripts.
// @author       thisismy-github
// @match        https://www.youtube.com/
// @match        https://www.youtube.com/watch*
// @grant        none
// @license      MIT
// @run-at       document-end
// @version      1.0.1
// ==/UserScript==


const mp3ButtonText = "MP3";
const mp4ButtonText = "MP4";
function mp3() { window.open(`https://yt.clit.repl.co/download/index.html?ytid=${ location.href.split('=')[1] }&format=mp3`); }
function mp4() { window.open(`https://loader.to/en49/?link=${ location.href }&f=7&s=1&e=1&r=loader`); }


const cssText = `
    .download-button {
        display: flex;
        flex-direction: row;
        cursor: pointer;
        background-color: var(--yt-spec-10-percent-layer);
        color: var(--yt-spec-text-secondary);
        border-radius: 2px;
        padding: var(--yt-button-padding);
        margin: auto var(--ytd-subscribe-button-margin, 4px);
        white-space: nowrap;
        font-size: var(--ytd-tab-system_-_font-size);
        font-weight: var(--ytd-tab-system_-_font-weight);
        letter-spacing: var(--ytd-tab-system_-_letter-spacing);
        text-transform: var(--ytd-tab-system_-_text-transform);
    }
    .download-button-text {
        --yt-formatted-string-deemphasize_-_display: initial;
        --yt-formatted-string-deemphasize-color: var(--yt-spec-text-secondary);
        --yt-formatted-string-deemphasize_-_margin-left: 4px;
    }
    .download-button-container {
        display: flex;
        flex-direction: row;
        cursor: grabbing;
    }
`;


(function() {
    'use strict';
    window.onload = () => {
        window.addEventListener("yt-navigate-finish", () => {
            setTimeout(() => {

                // apply css
                const style = document.createElement("style");
                style.type = "text/css";
                style.innerHTML = cssText;
                document.head.appendChild(style);

                document.querySelectorAll("#analytics-button:not(.download-panel)").forEach(panel => {
                    panel.classList.add("download-panel");

                    // mp4 button
                    const buttonMP4 = document.createElement("div");   // button
                    buttonMP4.classList.add("download-button");
                    buttonMP4.addEventListener("click", mp4);
                    const textMP4 = document.createElement("span");    // text
                    textMP4.classList.add("download-button-text");
                    textMP4.innerHTML = mp4ButtonText;
                    buttonMP4.appendChild(textMP4);                    // append text to button

                    // mp3 button
                    const buttonMP3 = document.createElement("div");   // button
                    buttonMP3.classList.add("download-button");
                    buttonMP3.addEventListener("click", mp3);
                    const textMP3 = document.createElement("span");    // text
                    textMP3.classList.add("download-button-text");
                    textMP3.innerHTML = mp3ButtonText;
                    buttonMP3.appendChild(textMP3);                    // append text to button

                    // outer container (to flex buttons side-by-side)
                    const container = document.createElement("div");
                    container.classList.add("download-button-container");
                    container.appendChild(buttonMP3);
                    container.appendChild(buttonMP4);
                    panel.insertBefore(container, panel.firstElementChild);
                });
            }, 200);
        });
    };
})();
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