title: convert regular expression from c# to javascript
body: <p>Can someone help me convert this c# regular express (email validation) to Javascript?</p>
  
  <pre><code>@"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$
  </code></pre>