Clean YouTube Watch Later Videos

youtube_clean_watch_later_videos.js

// Version 2.0.2
// This script will remove all videos from watch later list 
//
// Usage
//
// #1 go to https://www.youtube.com/playlist?list=WL
// #2 run following script in your browser console
(async function() {

  const playlistName = document.querySelector('.metadata-wrapper #container #text')?.textContent || document.querySelector('#text')?.textContent
  if(!playlistName) {
    alert(`Couldn't determine playlist name!`)
    return
  }
  
  if(!confirm(`Are you sure to delete ALL videos from ${playlistName}?`)) {
    return
  }
  
  console.info("start...")
  while(true) {
    const videos = document.querySelectorAll('#primary ytd-playlist-video-renderer')
    if(videos.length == 0) break
    
    for (let videoElement of videos) {
      const videoTitle = videoElement.querySelector('a#video-title')
      console.info(`Remove Video\n`    
        + `  Title: ${videoTitle.innerText}\n`
        + `  URL: ${videoTitle.href}`)

      const actionMenuButton = videoElement.querySelector('#menu #button')
      console.debug("click actionMenuButton", actionMenuButton)
      actionMenuButton.click()
      const removeButton = await untilDefined(() => document.evaluate(
        `//ytd-menu-service-item-renderer/tp-yt-paper-item//yt-formatted-string/span[text() = '${playlistName}']`,
          document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue)
      console.debug("click removeButton", removeButton)
      console.log("click removeButton", removeButton)
      // removeButton.click()
      
      await sleep(200)
    }
  } 
  console.info("done!")

  // === util functions ========================================================
  
  async function sleep (timeout) { 
    return new Promise(res => setTimeout(res, timeout))
  }
  
  async function untilDefined(factory, checkInterval = 100) {
    while (true) {
      const value = factory()
      if (value != null) return value
      await sleep(checkInterval)
    }
  }
})();

@sandorex thanks a lot, I've updated my script to your provided solution to get rid of language specific configuration.

It seems youtube did something so the script broke a bit, change

const playlistName = document.querySelector('.metadata-wrapper #container #text')?.textContent

to

const playlistName = document.querySelector('#text')?.textContent

The id stayed the same for a while now so im hopeful it wont need more fixing for a while 😄

@sandorex thx a lot, however for me it' works as expected with document.querySelector('.metadata-wrapper #container #text')?.textContent

Weird it works for me now too, it did not work yesterday for some reason

thank you

Thanks! The XPATH for the remove button no longer works as the text is not just the playlist name, but was able to amend that using Gemini and it worked great.

Below is what I changed it to. Maybe there is a better way, I am not fluent in XPATH and just used what Gemini gave me:

`//ytd-menu-service-item-renderer[.//yt-formatted-string[contains(text(), "Remove")]] | //tp-yt-paper-item[contains(., "Remove")]`

@lonerider543 thanks for mentioning I fixed it without the need of any language specific string again.