title: Fade out effect for text in HTML5 canvas
body: <p>I'm drawing simple text in HTML5 canvas using this:</p>
  
  <pre><code>context.fillStyle = "#FF0000"
  context.font = "italic 20pt Arial";
  context.fillText("sfddsfs", 50, 50);
  </code></pre>
  
  <p>Now I want to animate fade out of this text. How can that be done?</p>
  
  <p>Edit: I'm aware there's currently no ready to use way to do this (at least I can't find anything). I'm a noob in graphic programming but want to learn, so any hint about where to start is appreciated.</p>
  
  <p>Maybe something like putting the text in an own canvas and changing globalAlpha of the canvas...? But the background of the canvas would have to be transparent. And don't know about performance, have a lot of small labels appearing and dissapearing everywhere which need to be faded out.</p>