title: Getting value from object in javascript
body: <p>After <code>console.log(item)</code> I got following object. </p>
  
  <pre><code>Object {_value: "106", _id: "opt_zXtP8TOfW2zteOgDIJQDI6Bxx3xSTkl5", _class: "selected", _selected: "selected"}
  </code></pre>
  
  <p>I want <code>_value</code> from this object. How can I do this? </p>
  
  <p>I tried <code>alert(item.value)</code> but gets undefined</p>