Youtube API v3 get the Channel ID of user that uploaded a certain video

Question

I want to get the channel ID of a user that uploaded a certain YouTube video on javascript to after that comparing the channel id to see if it's in an array.

The thing is, I can't find exactly how to get that from javascript. I tried to get:

https://www.googleapis.com/youtube/v3/videos?part=snippet&id=[Video ID]&key=[my key]

but it gives me JSON parsing error on every video. Anyone knows how to do it exactly using YouTube API? Doesn't matter if I have to add an exteral script on the html part.

And, as an example of what I want to do, for this video:

https://www.youtube.com/watch?v=jNQXAC9IVRw

it should return 'UC4QobU6STFB0P71PMvOGN5A'.

Any idea on how to do it?

Answer 1

I took the Ajax code from youmightnotneedjquery.com and edited it a bit to make a getJSON utility function. This worked for me:

var API_KEY = 'YOUR_API_KEY'; // Replace this with your own key

getJSON(
  'https://www.googleapis.com/youtube/v3/videos?part=snippet&id=jNQXAC9IVRw&key=' + API_KEY,
  function (err, data) {
    if (err) {
        alert(err);
    } else {
        alert(data.items[0].snippet.channelId);
    }
  }
);

function getJSON(url, callback) {
  var request = new XMLHttpRequest();
  request.open('GET', url, true);

  request.onload = function() {
    if (request.status >= 200 && request.status < 400) {
      // We have the JSON, now we try to parse it
      try {
        var data = JSON.parse(request.responseText);
        // It worked, no error (null)
        return callback(null, data);
      } catch(e) {
        // A parsing arror occurred
        console.error(e);
        return callback('An error occurred while parsing the JSON.');
      }
    }
    // If an error occurred while fetching the data
    callback('An error occurred while fetching the JSON.');
  };

  request.onerror = function() {
    // There was a connection error of some sort
    callback('An error occurred while fetching the JSON.');
  };

  request.send();
}