Youtube Logo - Link to subscriptions feed

Change YouTube logo link to user's subscription feed instead of homepage (only when logged in)
当前为 2017-11-19 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name            Youtube Logo - Link to subscriptions feed
// @namespace       Youtube Logo - Link to subscriptions feed
// @description     Change YouTube logo link to user's subscription feed instead of homepage (only when logged in)
// @version         1.1.4
// @include         /http|https://.*youtube\..*/
// @supportURL      https://greasyfork.org/en/scripts/13582/feedback
// @author          aciid
// ==/UserScript==

//  console.info("Running Youtube Logo - Link to subscriptions feed");

function checkLogoLoaded(){
    var loopCount = 1;
    var loopInterval = setInterval(function(){
    var LogoElement = document.getElementById("logo").getElementsByTagName('a')[0];
    var UserLoggedIn = document.getElementById("end").getElementsByTagName("ytd-notification-topbar-button-renderer") != null;
    //console.info("Searching for logo - Loop: " + loopCount + " LogoElement: " + (LogoElement != null) + " UserLoggedIn: " + UserLoggedIn);
             
    if((LogoElement != null && UserLoggedIn) || loopCount >= 10){                                                                                                    // Loop to wait up to 60 seconds for YouTube logo
        LogoElement.href = "/feed/subscriptions";
        LogoElement.addEventListener("click", function(){window.location.href = "/feed/subscriptions";});                        // Force page redirection
        clearInterval(loopInterval);                                                                                                                                                                // Stop loop
    }
    loopCount++;
    }, 500);                                                                                                                                                                                                                // Loop with 500ms sleep
}

function runScriptOldLogo() {
    LogoElement.getElementsByTagName('area')[0].href = "/feed/subscriptions";                                                                       // Update special event logo URL        
    if (document.getElementById("yt-masthead-user") != null
        || document.getElementById("end").getElementsByTagName("ytd-notification-topbar-button-renderer") != null) {// Check user is logged in (old design)
           var LogoElement = document.getElementById("logo-container");                                                                                // Get logo element
           LogoElement.href = "/feed/subscriptions";                                                                                                   // Update logo element URL
    } 
}

//document.addEventListener("DOMContentLoaded", checkLogoLoaded);
//window.addEventListener("load", checkLogoLoaded);
//document.getElementsByTagName("body")[0].addEventListener("yt-navigate-start", checkLogoLoaded);
//document.addEventListener('readystatechange', runScript);                                                        

document.getElementsByTagName("body")[0].addEventListener("yt-navigate-finish", checkLogoLoaded);                                     // new youtube design
window.addEventListener("spfdone", runScriptOldLogo);                                                                                                                             // old youtube design
window.onload = setTimeout(function(){checkLogoLoaded(),runScriptOldLogo();}, 1);                                                                        // Execute script after page load