title: How to use the key of an object
body: <p>If there is:</p>
  
  <pre><code>var obj = {a: 'This is a', b: 'This is b', c: 'This is c'}
  var select = 'b';
  </code></pre>
  
  <p>How can I make to work something like this:</p>
  
  <pre><code>console.log(obj.select); // This would output: This is b
  </code></pre>