如何展示自定义音频播放器的当前时间和总时长？

<audio id="myAudio" src="audio.mp3"></audio>

var audio = document.getElementById("myAudio");
var currentTime = audio.currentTime;
var duration = audio.duration;

function formatTime(time) {
  var minutes = Math.floor(time / 60);
  var seconds = Math.floor(time % 60);
  return minutes + ":" + (seconds < 10 ? "0" : "") + seconds;
}

<span id="currentTime"></span> / <span id="totalTime"></span>

var currentTimeElement = document.getElementById("currentTime");
var totalTimeElement = document.getElementById("totalTime");

audio.addEventListener("timeupdate", function() {
  currentTimeElement.textContent = formatTime(audio.currentTime);
  totalTimeElement.textContent = formatTime(audio.duration);
});