在 Facebook Creator Studio 音樂庫中自動切換下一首歌曲。https://www.facebook.com/creatorstudio/

fb-creatorstudio-player.js

// Auto switch to next one when end of a song.
// start playing a song then paste this code.
(function() {
  function getElementByXpath(path) {
    return document.evaluate(
      path,
      document,
      null,
      XPathResult.FIRST_ORDERED_NODE_TYPE,
      null
    ).singleNodeValue;
  }

  var timecodeNow =
    "/html/body/div[1]/div/div[2]/div[1]/div/div[2]/div[1]/div[2]/div[2]/div/div[4]/div/div[2]/div/div[2]/div[1]";
  var timecodeEnd =
    "/html/body/div[1]/div/div[2]/div[1]/div/div[2]/div[1]/div[2]/div[2]/div/div[4]/div/div[2]/div/div[2]/div[3]";
  var nextSong =
    "/html/body/div[1]/div/div[2]/div/div/div[2]/div[1]/div[2]/div[2]/div/div[4]/div/div[2]/div/div[1]/a[5]";
  var eleNow = getElementByXpath(timecodeNow);
  var eleEnd = getElementByXpath(timecodeEnd);
  var eleNext = getElementByXpath(nextSong);

  // https://codepen.io/webgeeker/pen/YjrZgg
  const MutationObserver =
    window.MutationObserver ||
    window.WebKitMutationObserver ||
    window.MozMutationObserver;

  const config = {
    attributes: true,
    childList: true,
    characterData: true,
    subtree: true
  };

  const observer = new MutationObserver(function(mutations) {
    mutations.forEach(function(mutation) {
      if (mutation.type === "characterData") {
        if (
          eleNow.innerText === eleEnd.innerText &&
          eleEnd.innerText !== "0:00"
        ) {
          eleNext.click();
        }
      }
    });
  });

  observer.observe(eleNow, config);
})();