title: JavaScript: how to control progress speed?
body: <p>Is there any option to increase and decrease the speed of the progress?
  Sometimes progress takes time and sometime very slow to finish:</p>
  <pre><code>var value = 0,
      interval = setInterval(function() {
        value = ((+value) + .1).toFixed(1);
        if(value == 80.5) clearInterval(interval);   
        $('p').html(value+'%');
      },2);
  </code></pre>
  <p><a href="http://jsfiddle.net/sweetmaanu/zjdBh/13/" rel="nofollow noreferrer">http://jsfiddle.net/sweetmaanu/zjdBh/13/</a></p>