title: Is JavaScript's array.clear() not a function?
body: <p>I'm trying to empty an array containing my drawn coordinates when a button "clear" is pressed.</p>
  
  <p>When I call <code>drawnDivs.clear()</code>, I get an error that it is not a function. <code>drawnDivs</code> is certainly an array, and I have <a href="http://en.wikipedia.org/wiki/Firebug_%28software%29" rel="noreferrer">Firebug</a> <code>console.log</code>s printing things out. It's <a href="http://dylanstestserver.com/drawcss" rel="noreferrer">hosted here</a>.</p>