This question is about scripting the main YouTube site, client side from JavaScript.
While it looks easy as a click, I found no way to change the current video by a new non in context video ID without reloading.
This seems to be related with the polymer library in use, with a lot of shadow dom and some special behavior.
Here is the context: I am making for my own use a bookmarklet that load videos from the reddit json api, which supports CORS calls.
So far so good, I can load many videos, image previews and links into the YouTube sidebar, with this simple enough handcrafted script.
Bookmarklet to call the script:
javascript:void%20function(){target=document.getElementsByTagName(%22script%22)[0],inj=document.createElement(%22script%22),inj.src=%22https://webdev23.github.io/reddube/reddube.js%22,target.appendChild(inj)}();
This bookmarklet is loading into the DOM a js file, that is parsing the json api to get what I need.
Here is the content of the called file:
var reds = ["/r/videos","/r/unknownvideos","/r/DeepIntoYouTube","/r/newsreels","/r/fullmoviesonyoutube","/r/SF_Videos","/r/classicfilms","/r/Documentaries","/r/artdocumentaries","/r/ShowsonYT","/r/YTPL","/r/NotTimAndEric","/r/youtubehaiku","/r/PlayItAgainSam","/r/ObscureMedia","/r/360video","/r/AccidentalComedy","/r/amibeingdetained","/r/ArtisanVideos","/r/AwfulCommercials","/r/bestofworldstar","/r/cringe","/r/CommercialCuts","/r/contagiouslaughter","/r/cookingvideos","/r/curiousvideos","/r/deepintoyoutube","/r/documentaries","/r/educativevideos","/r/FastWorkers","/r/fightporn","/r/FuckingWithNature","/r/fullmoviesonyoutube","/r/happycrowds/","/r/idiotsfightingthings","/r/lectures","/r/mealtimevideos","/r/motivationvideos","/r/ObscureMedia","/r/playitagainsam","/r/Prematurecelebration","/r/PublicFreakout","/r/Roadcam","/r/streetfights","/r/sweetjustice","/r/TheWayWeWereOnVideo","/r/trailers","/r/UnexpectedThugLife","/r/videoporn","/r/vids","/r/vines","/r/virtualfreakout","/r/woahtube","/r/listentothis/","/r/Tekno/","/r/reggae/","/r/RootsReggae","r/ska","/r/dub","/r/hip_hop","/r/treemusic/","/r/stonerrock/","/r/frenchrap/","/r/trance/","/r/minimal/"]
var rview = ["","/new/","/rising/","/controversial/","/top/"]
related.innerHTML = "<div style='filter: sepia(38%) invert(100%) saturate(100%) brightness(1) grayscale(0%) hue-rotate(360deg) contrast(100%)'><span id='subR' data-ccc='25' style='color:white;background:#141e1b;font-size:1.44em;width:20px'></span><input type='range' value='0' max='64' id ='redR' style='float:right;width:230px' onchange='redList.innerHTML=\"\";redd(this.value)'><br><span onclick='redList.innerHTML=\"\";' style='float:right;margin:3px 0 0 0'><button id='rflt' data-filter='0' onclick='this.dataset.filter=0;redd(redR.value)'>hot</button><button onclick='rflt.dataset.filter=1;redd(redR.value)'>new</button><button onclick='rflt.dataset.filter=2;redd(redR.value)'>rising</button><button onclick='rflt.dataset.filter=3;redd(redR.value)'>controversial</button><button onclick='rflt.dataset.filter=4;redd(redR.value)'>top</button></span><hr /><hr /><hr /><hr /><hr /><tr><br></div><div id='redList'>"
function redd(it){
console.log(it)
console.log(reds[1])
subR.innerHTML = reds[it]
xhr = new XMLHttpRequest
xhr.open("GET","https://www.reddit.com"+reds[it]+rview[rflt.dataset.filter]+".json?limit=200",true)
xhr.send(null)
xhr.onreadystatechange = function() {
if (xhr.readyState === xhr.DONE) {
if(this.status === 200) {
vids = JSON.parse(xhr.responseText)
cc = subR.dataset.ccc
for (var j=0;j<=cc;j++){
try{
var rt = vids['data']['children'][j]['data']['title'],
rl = vids['data']['children'][j]['data']['url'],
rp = vids['data']['children'][j]['data']['secure_media']['oembed']['thumbnail_url'],
rr = vids['data']['children'][j]['data']['permalink']
redList.innerHTML += "<td><a href='"+rl+"'><img style='width:150px;height:auto;max-width:120px' src='"+rp+"'></img></a><span style='max-width:68%;float:right;text-align:center;font-size:1.23em'><a class='yt-simple-endpoint style-scope ytd-compact-video-renderer' style='text-decoration:bold;font-size:1.23em;text-align:left;min-width:260px' href='"+rl+"'>"+rt+"</a><a target='blank' style='text-decoration:bold;color:black;float:right' href='https://www.reddit.com"+rr+"'>⮊</a></span></td><br>"
}catch(e){console.log(e)}
}
}
}
}
}
related.innerHTML += "</tr><button onclick='redList.innerHTML=\"\";redd(redR.value)'>Load more</button>"
redd(0)
window.onscroll = function() {
var d = document.documentElement,
offset = d.scrollTop + window.innerHeight,
height = d.offsetHeight
if (offset >= '2000' && offset <= '2300') {
subR.dataset.ccc = 25
}
if (offset >= '2000' && offset <= '2100') {
subR.dataset.ccc = 50
}
if (offset >= '3400' && offset <= '3500') {
subR.dataset.ccc = 100
}
if (offset >= '5400' && offset <= '5500') {
subR.dataset.ccc = 150
}
if (offset >= '7400' && offset <= '7500') {
subR.dataset.ccc = 200
}
}
At this stage, clicking a link is just reloading the page.
I tried many things, changing the content of elements, try to alter the "next" recommended video.
Also creating a link in the DOM, isn't working, it is reloading.
Here is the problem in a simple way:
Let's say you are in this YouTube page https://www.youtube.com/watch?v=YgGzAKP_HuM
From the console, how to load this non related id -q7ZVXOU3kM
into the page, just like a link click on the recommendation sidebar?
The following is NOT working: Visibility monitor is not attached
xhr = new XMLHttpRequest
xhr.open("GET","https://www.youtube.com/watch?v=-q7ZVXOU3kM",true)
xhr.send(null)
document.body.innerHTML = xhr
18 OF MARCH 2018: END OF BOUNTY: QUESTION UNRESOLVED!!!
This is a fairly complex stuff.
The dom content is constantly changing at every reload, and it include recommended video id into the changing scripts. This id's only are allowed to use the ajax capabilities.
This recommendation are changing at any reload, but they are coming back in loop.
I am building a tool to deeply analyze differences, and I found many interesting things, much more that I was searching.
This topic isn't close!
It's not about the destination, it's about the journey.
