title: loop through a JSONObject
body: <p>I am having trouble understanding how can I loop through a JSONArray like this one-----
        [
          {"A": "a", "X": "x"},
          {"A": "a1", "X": "x1"},
          {"A": "a2", "X": "x2"}
          {"A": "a3", "X": "x3"}
        ]
  Any help would be greatly appreciated. </p>