title: Get Length Of Json object
body: <p>I have json object which is returned from php file, the json values are as follows</p>
  
  <pre><code>    {
    "0": {
      "id": "35",
      "name": "first name",
      "date": "2014-03-03",
      "age": "25"
    },
    "1": {
      "id": "36",
      "name": "name",
      "date": "0000-00-00",
      "age": "25"
    },
    "2": {
      "id": "37",
      "name": "myname",
      "date": "0000-00-00",
      "age": "25"
    },
    "average_age": 25,
    "count": 3
  }
  </code></pre>
  
  <p>How do I get the count of values other than average_age and count
  that is for the given json object i want to get 3 as length in jQuery</p>