title: Updating a JSON object using Javascript
body: <p>How can i update the following JSON object dynamically using javascript or Jquery?</p>
  <pre><code>var jsonObj = [{'Id':'1','Username':'Ray','FatherName':'Thompson'},  
                 {'Id':'2','Username':'Steve','FatherName':'Johnson'},
                 {'Id':'3','Username':'Albert','FatherName':'Einstein'}]
  </code></pre>
  <p>I would like to dynamically update the Username to 'Thomas' where the 'Id' is '3'.</p>
  <p>How can I achieve this?</p>