title: What is the difference between {active: "yes"} and {"active": "yes"}?
body: <p>I've used FireBug to test the two cases and they seem pretty similar by result:</p>
  
  <pre><code>&gt;&gt;&gt; var x = {"active": "yes"}
  &gt;&gt;&gt; x.active
  "yes"
  &gt;&gt;&gt; var x = {active: "yes"}
  &gt;&gt;&gt; x.active
  "yes"
  </code></pre>
  
  <p>But I'm pretty sure there is some difference between these two, maybe even performance related difference. Bottom line - I'd like to know if there is a difference between {active: "yes"} and {"active": "yes"}.</p>