title: off focus event on text field - extjs 4.1 mvc
body: <p>When the user is finished typing into a textfield i would like to call an event. </p>
  
  <p>Currently i have</p>
  
  <pre><code>'#ClientId': { change: this.onProjectItemSelect },
  </code></pre>
  
  <p>The event 'change' is called, but it is called when the user starts typing. </p>
  
  <p>I appreciate this is standard question for the docs. Where is the event info documented.   </p>