☰

Youtube Resumer

Updates the url so that it contains "?t={time}" corresponding to video.currentTime. Sometimes Youtube opens a video with a t parameter, but it doesn't get updated and when you refresh you go back to that time instead of where you left off.

当前为 2021-12-04 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name        Youtube Resumer
  3. // @description Updates the url so that it contains "?t={time}" corresponding to video.currentTime. Sometimes Youtube opens a video with a t parameter, but it doesn't get updated and when you refresh you go back to that time instead of where you left off.
  4. // @version     3
  5. // @match       https://www.youtube.com/*
  6. // @grant       none
  7. // @namespace https://greasyfork.org/users/206408
  8. // ==/UserScript==
  9.  
  10. (async () => {
  11.  
  12.     function l(...args){
  13.         console.log(`[Youtube Resumer]`, ...args)
  14.     }
  15.  
  16.     function tryListen(){
  17.         const video = document.querySelector('video');
  18.         if(video){
  19.             l('listening', video)
  20.             listening = true
  21.             video.addEventListener('timeupdate', (event) => {
  22.                 const time = parseInt(video.currentTime)
  23.                 if(time > 0) { //avoid having ?t=0
  24.                     const url = new URL(window.location.href)
  25.                     url.searchParams.set('t', time)
  26.                     window.history.replaceState(null, null, url);
  27.                 }
  28.             })
  29.         }
  30.     }
  31.  
  32.     let listening = false //the video element exists even if you go back to the home page, so no need to readd event listeners
  33.  
  34.     //Event for each page change
  35.     document.addEventListener("yt-navigate-finish", function() {
  36.         l('navigate-finish')
  37.         if(!listening) tryListen()
  38.     });
  39. })();