YT video tab by default

Open "Video" tab of youtube channel by default
目前为 2022-06-01 提交的版本。查看最新版本。
换行
// ==UserScript==
// @name          YT video tab by default
// @description   Open "Video" tab of youtube channel by default
// @author        MK
// @namespace     max44
// @homepage      https://gf.qytechs.cn/en/users/309172-max44
// @match         *://*.youtube.com/*
// @match         *://*.youtu.be/*
// @icon          https://cdn.icon-icons.com/icons2/1488/PNG/512/5295-youtube-i_102568.png
// @version       1.0
// @license       MIT
// @require       https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js
// @run-at        document-idle
// ==/UserScript==

(function() {
  'use strict';

  var urlAtLastCheck = "";
  var nameAtLastCheck = "";
  var divTabs = null;

  setInterval(function() { //Check page content constantly
    if (urlAtLastCheck != window.location.href && nameAtLastCheck != document.title) { //Check whether URL and channel name have changed
      var pathArray = window.location.pathname.split('/');
      var firstPath = pathArray[1];
      var lastPath = pathArray[pathArray.length - 1];
      urlAtLastCheck = window.location.href;
      nameAtLastCheck = document.title;

      if (firstPath === "" || firstPath === "watch" || firstPath === "playlist" || firstPath === "feed" || firstPath === "gaming" || firstPath === "live" || lastPath === "history" || lastPath === "featured" || lastPath === "videos" || lastPath === "playlists" || lastPath === "community" || lastPath === "channels" || lastPath === "about") { //If not a channel or any channel's tab was selected
        //console.log("Not a channel or any tab is selected");

      } else { //If a channel
        let waitHeader = setInterval(function() { //Wait untile header loaded
          divTabs = $( "div#tabsContainer > div#tabsContent > tp-yt-paper-tab" ); //Get array of tabs as HTML elements

          if (divTabs != null && divTabs.length >= 2) {
            clearInterval(waitHeader); //Stop waiting for tabs

            //Count visible tabs
            var countVisible = 0;
            var i;
            var tabIndex = -1;
            for (i = 0; i < divTabs.length; i++) {
              if (isVisible(divTabs[i])) countVisible++;
              if (countVisible == 2) tabIndex = i; //Video tab is 2nd visible
            }

            if (countVisible > 4) { //Enough number of visible tabs - normal channel
              divTabs[tabIndex].click();
              //console.log("Video tab (" + tabIndex + ") is activated. Visible tabs: " + countVisible);
            }
          }
        }, 250); //Interval to wait for header with tabs loading
        if (divTabs != null) divTabs = null;
        //console.log(" ");
      }
    }
  }, 250); //Interval to check page content

  function isVisible(pObj) { //Check all the parents of element to find whether it is visible or not
    if (pObj != null) {
      var checkNext = true;
      var vObj = pObj;

      while (checkNext) {
        checkNext = false;
        //console.log("checking element " + vObj.tagName + "#" + vObj.id + ": '" + document.defaultView.getComputedStyle(vObj,null)['display'] + "'");
        if (document.defaultView.getComputedStyle(vObj,null)['display'] != "none") {
          if (vObj.parentElement != null) {
            vObj = vObj.parentElement;
            checkNext = true;
          }
        } else {
          return false;
        }
      }
      return true;
    }
    return false;
  }
})();
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