☰

YouTube - automatically expand subscription list

Automatically click the "Show More" subscriptions button in the side bar

目前为 2021-11-02 提交的版本，查看 最新版本。

// ==UserScript==
// @name         YouTube - automatically expand subscription list
// @description  Automatically click the "Show More" subscriptions button in the side bar
// @namespace    https://greasyfork.org/en/scripts/367774-youtube-automatically-expand-subscription-list
// @version      0.1.4
// @author       Valacar
// @include      https://www.youtube.com/*
// @noframes
// @grant        none
// ==/UserScript==

(function() {
  'use strict';

  const DEBUGGING = 0;
  const debugLog = DEBUGGING ? console.debug : function() {};
  const debugAssert = DEBUGGING ? console.assert : function() {};

  window.addEventListener("loadstart", expandSubscriptions, true);

  function expandSubscriptions() {
    const expanders = document.querySelectorAll("ytd-guide-collapsible-entry-renderer");
    debugLog("----------");
    debugLog("::: Found %d expanders", expanders.length);
    if (expanders.length == 0) {
      window.removeEventListener("loadstart", expandSubscriptions, true);
    }
    for (let expander of expanders) {
      debugLog("\t", expander);
      debugAssert(expander.previousSibling);
      const itemAbove = expander.previousSibling;
      const subscriptionChannel = itemAbove.querySelectorAll(
        'a[href^="/c/"],a[href^="/user/"],a[href^="/feed/subscriptions/"],a[href^="/channel/"]'
      );
      if (subscriptionChannel.length) {
        debugLog("\t\tFound a subscription channel", subscriptionChannel[0]);
        const isExpanded = expander.hasAttribute("expanded");
        if (!isExpanded) {
          const expanderItem = expander.querySelector("#expander-item");
          if (expanderItem) {
            debugLog("::: Found #expander-item", expanderItem);
            debugLog("::: %cClicking #expander-item",
              "background: green; color: white; font-weight: bold;"
            );
            expanderItem.click();
            window.removeEventListener("loadstart", expandSubscriptions, true);
          } else {
            debugLog("::: Can't find #expander-item to click.");
          }
          return;
        } else {
          debugLog("::: Expander is already expanded. Not clicking.");
        }
      } else {
        debugLog("\t\tNo subscription channel link above expander.");
      }
    }
  }

})();