YouTube RSS Feed

Adds an RSS feed button to YouTube channels next to the subscribe button
当前为 2016-12-09 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name          YouTube RSS Feed
// @namespace     http://gf.qytechs.cn/users/2240-doodles
// @author        Doodles
// @version       16
// @description   Adds an RSS feed button to YouTube channels next to the subscribe button
// @icon          http://i.imgur.com/Ty5HNbT.png
// @icon64        http://i.imgur.com/1FfVvNr.png
// @include       *://*youtube.*/*
// @grant         none
// @run-at        document-end
// @require       http://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js
// @updateVersion 16
// ==/UserScript==

(function() {
	window.jQ=jQuery.noConflict(true);
	RssFeedButton();
	document.body.addEventListener("DOMSubtreeModified", SelectiveFire);
	function SelectiveFire(){
		setTimeout(function() {
			if(jQ('#rssSubButton').length == 0){
				RssFeedButton();
			}
		}, 2500);
	}
	function RssFeedButton(){
		var rssFeed = navigator.userAgent.indexOf("Firefox") > 0 ? "http" : "feed";
		if(document.URL.indexOf("/playlist?list=") != -1){
			var playlistId = document.URL.split("list=")[1].split("&")[0];
			if(!playlistId.startsWith("PL")){
				playlistId = "PL" + playlistId;
			}
			rssFeed += "://www.youtube.com/feeds/videos.xml?playlist_id=" + playlistId;
		}else{
			rssFeed += "://www.youtube.com/feeds/videos.xml?channel_id=" + jQ("meta[itemprop='channelId']").attr("content");
		}
		if(jQ("link[title='RSS']").length === 0){
			jQ('head').append('<link rel="alternate" type="application/rss+xml" title="RSS" href="' + rssFeed + '" />');
		}
		var rssSubButton = jQ('<a/>').attr('id', 'rssSubButton').attr('target', '_blank').attr('href', rssFeed)
			.addClass('yt-uix-button yt-uix-button-size-default yt-uix-button-subscribe-branded yt-uix-button-has-icon no-icon-markup')
			.css("background", "linear-gradient(#fd9b12, #fe6702)");
		jQ(rssSubButton).html('<span class="yt-uix-button-content"><span class="subscribe-label">RSS Subscribe </span></span>');
		jQ(rssSubButton).mouseover(function(){ jQ(this).css("background", "linear-gradient(#fe6702, #fd9b12)"); });
		jQ(rssSubButton).mouseout(function(){ jQ(this).css("background", "linear-gradient(#fd9b12, #fe6702)"); });
		if(document.URL.indexOf("/playlist?list=") != -1){
			jQ('div.playlist-actions').append(rssSubButton);
		}else if(document.getElementById('c4-primary-header-contents') !== null){
			jQ('span.channel-header-subscription-button-container').prepend(document.createTextNode(" "));
			jQ('span.channel-header-subscription-button-container').prepend(rssSubButton);
		}else if(document.URL.indexOf("/watch") != -1 && document.URL.indexOf("v=") != -1){
			jQ('#watch7-subscription-container > span:first-child').prepend(document.createTextNode(" "));
			jQ('#watch7-subscription-container > span:first-child').prepend(rssSubButton);
		}
	}
})();
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