title: jSon objects count
body: <p>I have a string <code>st</code> returned from a web service. I convert the string to an object, how can I count the no. of arrays inside it? (for this case it's <strong>2</strong>)</p>
  
  <pre><code>var st = "{[{"Name": "fake", "Address": "add"]},[{"Name": "fake", "Address": "add"}]}";  
  var json = eval(st);  
  </code></pre>
  
  <p><code>json.length</code> is always returning <strong>1</strong></p>