title: How do two identical strings not equal each other?
body: <p>Someone sent me this email:</p>
  
  <p>Why do both of these alert to false?</p>
  
  <pre><code>alert('a‌' == 'a');
  alert('a‌' === 'a');
  </code></pre>
  
  <p>Here's a demo</p>
  
  <h1><a href="http://jsfiddle.net/sQrST/">JSFiddle DEMO</a></h1>