title: Rounding off a formatted string number using JavaScript or ExtJS
body: <p>Below, I have a number which I am trying to format using javascript. But it returns NaN.</p>
  
  <pre><code>var v = "153,452.47";
  alert(Math.round(v));
  </code></pre>
  
  <p>You can use following fiddle: <a href="http://jsfiddle.net/webfriend13/nhyNF/" rel="nofollow">Example</a></p>
  
  <p>How can we format a numeric string having separators?</p>