title: JavaScript music volume changer
body: <p>so I'm not to knwoledgeable on JavaScript so wouldn't know how to do this. Also from my searching I could only find how to use JavaScript to change the html audio tag volume, but that isn't what I want.</p>
  
  <p>I want to be able to change the volume of this script below. I don't want an actual slider on the page, literally a variable I can change the value for in the script. (This code isn't mine, I found it and it works well for what I need).</p>
  
  <pre><code>var collection=[];
  var loadedIndex=0;
  
  function init(audios) {
    for(var i=0;i&lt;audios.length;i++) {
      var audio = new Audio(audios[i]);
      collection.push(audio);
      buffer(audio);
    }
  }
  
  function buffer(audio) {
    if(audio.readyState==4)return loaded();
    setTimeout(function(){buffer(audio)},100);
  }
  
  function loaded() {
    loadedIndex++;
    if(collection.length==loadedIndex)playLooped();
  }
  
  function playLooped() {
    var audio=Math.floor(Math.random() * (collection.length));
    audio=collection[audio];
    audio.play();
    setTimeout(playLooped,audio.duration*1000);
  }
  
  init([
    'songs/1.ogg',
    'songs/2.ogg',
  ]);
  </code></pre>
  
  <p>The script basically picks one of the two songs at random and then plays it, it's just way to loud and I need some sort of volume adjustment. Thanks</p>