title: treat json objects value as integer
body: <p>I have a json file which I am accessing through JS</p>
  
  <pre><code>latitude =data8.weblandmarks8[j].latitude + latitude;
  </code></pre>
  
  <p>should add all the latitudes so that I could average them later
  instead  it just concatenates them
  How should i achieve what I want to</p>
  
  <p>Json entry</p>
  
  <pre><code>"latitude": "28.14331",
  </code></pre>