There seems to be a problem with the progress bar lagging behind. To see the issue in action, click on THIS LINK and go to the second song. The progress bar appears to be malfunctioning. If you have any solutions or suggestions, please assist! For a visual reference of the problem, check out this image. Below is the necessary code that I believe can help resolve this issue.
var timer;
var percent = 0;
var audio = document.getElementById("audioPlayer");
audio.addEventListener("playing", function(_event) {
var duration = _event.target.duration;
advance(duration, audio);
});
audio.addEventListener("pause", function(_event) {
clearTimeout(timer);
});
var advance = function(duration, element) {
var progress = document.getElementById("progress");
increment = 10 / duration
percent = Math.min(increment * element.currentTime * 10, 100);
progress.style.width = percent + '%'
startTimer(duration, element);
}
var startTimer = function(duration, element) {
if (percent < 100) {
timer = setTimeout(function() {
advance(duration, element)
}, 100);
}
}#timeline {
width: 50%;
height: 4px;
background: rgba(0, 0, 0, .3);
margin-top: 27px;
float: left;
margin-left: 10px;
border-radius: 15px;
background-color: blue;
}
/*Grabable Playhead*/
#playhead {
cursor: pointer;
width: 18px;
height: 18px;
border-radius: 50%;
margin-top: -10.9px;
background: black;
}
.progress {
height: 5px;
background: black;
transition: width .1s linear;
}<audio id="audioPlayer" preload="true" ontimeupdate="initProgressBar()">
<source src="https://tunechestmusic.000webhostapp.com/sleepy.mp3">
</audio>
<div id="wrapper">
<!--Audio Player Interface-->
<div id="audioplayer">
<button id="pButton" class="play"></button>
<div id="timeline">
<div class="progress" id="progress"></div>
<div id="playhead"></div>
</div>
</div>
</div>