title: Javascript error :Object doesn't support this property or method in IE Browser
body: <p>I have javascript validation method, its working good in firefox, but its not working in IE browser.
  I'm getting error as <code>Object doesn't support this property or method</code> .Please advise..</p>
  
  <pre><code>function validateChunk(s)
  {
      return !!s.match(/^[a-z]+(?:\(\d+\))?$/);
  }
  
  function filterValid(v)
  {
      return !v;
  }
  
  function testCases(str)
  {
      var chunks = str.split(",");
      var validated = chunks.map(validateChunk);
      return (0 === validated.filter(filterValid).length);
  
  }
  </code></pre>
  
  <p><a href="http://jsfiddle.net/c8t26/7/" rel="nofollow">jsfiddle</a></p>