title: Remove portion of string in Javascript
body: <p>I have a String like this in Javascript:</p>
  
  <pre><code>string = '@usernameWhats on your mind?'
  </code></pre>
  
  <p>I need to get rid of <code>'Whats on your mind?'</code> from the string.</p>
  
  <p>How would I do that?</p>