Youtube favorites channels

Highlights videos of the channels that you mark as favorite (only for Grid view). Tap the heart icon on the channel page to add it to your favorites.
目前为 2021-09-11 提交的版本。查看最新版本。
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Wrap lines
// ==UserScript==
// @name         Youtube favorites channels
// @name:ru      Избранные каналы Youtube
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Highlights videos of the channels that you mark as favorite (only for Grid view). Tap the heart icon on the channel page to add it to your favorites.
// @description:ru  Выделяет видео избранных каналов среди остальных (только в режиме Сетки). Нажмите значок сердца на странице канала, чтобы добавить его в избранное.
// @author       dark1103
// @include      https://www.youtube.com/*
// @icon         https://www.google.com/s2/favicons?domain=youtube.com
// @require      http://code.jquery.com/jquery-3.4.1.min.js
// @grant        GM_getValue
// @grant        GM_setValue
// ==/UserScript==
 
(function() {
    'use strict';
    var bg_color = 'lightgoldenrodyellow';
 
 
 
    function getFav(){
         var fav = GM_getValue("fav1");
        if(fav === undefined){
            fav = [];
        }
        return fav;
    }
 
    function onLoaded(){
        var name = $('#channel-name #text').eq(0).text();
        var isFav = getFav().includes(name);
        $('#fav-button').remove();
        var node = $('<div id="fav-button" class="style-scope ytd-c4-tabbed-header-renderer" style="line-height: 38px;font-size: large;cursor: pointer;">' + (isFav ? '💖' : '🤍') + '</div>');
        node.appendTo($('#inner-header-container #buttons'));
 
        node.on('click', function(){
 
            var fav = getFav();
 
            if(isFav){
                fav = fav.filter(item => item !== name);
                isFav = false;
            }else{
                fav.push(name);
                isFav = true;
            }
 
            $('#fav-button').html(isFav ? '💖' : '🤍');
            GM_setValue("fav1", fav);
        });
 
    }
    function highlightFav(){
        if(location.href === 'https://www.youtube.com/feed/subscriptions'){
            var fav = getFav();
            $('ytd-grid-video-renderer').filter(function(){
                var name = $(this).find('#channel-name #text').text();
                return fav.includes(name);
            }).css('background-color', bg_color);
        }
    }
 
    function createMutationListener(){
        var target = document.querySelector('body')
 
        // Create an observer instance linked to the callback function
        const observer2 = new MutationObserver(function(mutationsList, observer) {
            // Use traditional 'for loops' for IE 11
            for(const mutation of mutationsList) {
                if (mutation.type === 'childList') {
                    var target = $(mutation.target);
                    //console.log(target);
                    if(target.prop("tagName") === 'ytd-thumbnail-overlay-time-status-renderer'.toUpperCase()){
                        highlightFav();
                    }
                }
            }
        });
 
        // Start observing the target node for configured mutations
        observer2.observe(target, { attributes: true, childList: true, subtree: true });
    }
 
    $(document).ready(function(){
        onLoaded();
        highlightFav();
        createMutationListener();
    });
 
 
    var oldHref = document.location.href;
    var bodyList = document.querySelector("body")
        ,observer = new MutationObserver(function(mutations) {
 
            mutations.forEach(function(mutation) {
 
                if (oldHref != document.location.href) {
                    oldHref = document.location.href;
                    onLoaded();
                    highlightFav();
                }
 
            });
 
        });
 
    observer.observe(bodyList, {
        childList: true,
        subtree: true
    });
 
})();
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