title: Javascript: indexOf with Regular Expression
body: <p>How can I check whether the page url contains a '#' character <strong>plus some random digits</strong> </p>
  
  <blockquote>
    <p>e.g. www.google.de/#1234</p>
  </blockquote>
  
  <pre><code>if( window.location.href.indexOf('#') &gt; 0 ){
    alert('true');
  }
  </code></pre>
  
  <p>Does indexOf support Regular Expressions?</p>