title: How to read query string in ExtJS 4?
body: <p>I have an ExtJS application which is invoked with some query string parameters. I would like to know how to read those parameters and their values using ExtJS 4.</p>
  
  <p>My ExtJS application URL will look like the following:</p>
  
  <pre><code>http://localhost:8080/myapp?candidate_id=101&amp;candidate_id=102&amp;candidate_id=103
  </code></pre>