title: extracting json data
body: <p>I have some json from a remote server and the results are returned like this:</p>
  
  <pre><code>[{"item1":"tag1","a1":"b1"},{"item2":"tag2","a2":"b2"}]
  </code></pre>
  
  <p>How would I get the value of a1 and a2?</p>
  
  <p>Thanks</p>