问Youtube iframe无法在移动Chrome浏览器中工作

EN

//YouTube embed with YouTube Iframe API
var tag = document.createElement("script");
tag.src = "https://www.youtube.com/iframe_api";
var firstScriptTag = document.getElementsByTagName("script")[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

// YouTube embed player details
var player;
function onYouTubeIframeAPIReady() {
  player = new YT.Player("player", {
    height: "390",
    width: "640",
    videoId: "668nUCeBHyY",

    //Features
    playerVars: {
      controls: 0,
      rel: 0,
      disablekb: 1,
    },
  });
}

//functions
function playYT() {
  player.playVideo();
}

function pauseYT() {
  player.pauseVideo();
}

<div style="pointer-events:none" id="player"></div><br><br>
<button onclick="playYT()">Play</button>
<button onclick="pauseYT()">Pause</button>