CODEWITHSUNDEEP
javascripthtmlaudio
Lamar
Lamar

Reputation: 1849

HTML5 Audio to play a playlist of local mp3 files

After searching a while for how to make audio tag to play a song from local machine, I found this solution (Play audio local file with html):

var $audio = $('#myAudio');
$('input').on('change', function(e) {
  var target = e.currentTarget;
  var file = target.files[0];
  var reader = new FileReader();

  console.log($audio[0]);
   if (target.files && file) {
        var reader = new FileReader();
        reader.onload = function (e) {
            $audio.attr('src', e.target.result);
            $audio.play();
        }
        reader.readAsDataURL(file);
    }
});

And html:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="file">
<audio controls id="myAudio" autoplay></audio>

The above code looks good for one file. The question is that is there a good way to load multiple files from input to make the audio play them like a playlist, without creating multiple instances of FileReader simultaneously? Something like storing the files in array first, and then feeding src or audio from that array.

Upvotes: 0

Views: 8325

Answers (1)

alessandrio
alessandrio

Reputation: 4370

createObjectURL instead of new FileReader()

var songs = document.getElementById("songs"),
    myAudio = document.getElementById("myAudio");
function next(n){
  var url = URL.createObjectURL(files[n]);
  myAudio.setAttribute('src', url);
  myAudio.play();
}
var _next = 0,
    files,
    len;
songs.addEventListener('change', function() {
  files = songs.files;
  len = files.length;
  if(len){
    next(_next);
  }
});
myAudio.addEventListener("ended", function(){
   _next += 1;
   next(_next);
   console.log(len, _next);
   if((len-1)==_next){
     _next=-1;
   }
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="file" id="songs" multiple>
<audio controls id="myAudio" autoplay></audio>

Upvotes: 8

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