Youtube playlist duration in javascript

Usage 😄

Access a youtube playlist:

https://youtube.com/playlist?list=PLMC9KNkIncKtPzgY-5rmhvj7fax8fdxoj

Open the developer console using F12

Paste the code below.

Code ⚡

let date = new Date(null);
document
  .querySelectorAll("ytd-thumbnail-overlay-time-status-renderer")
  .forEach(video =>
    date.setSeconds(
      video.innerText
        .split(":")
        .reduce((accumulator, time) => 60 * accumulator + +time)
    )
  );
console.log(date.toISOString().substr(11, 8));