title: using regex to match <br> or <br/> in a string
body: <p>Can someone please help me in finding a regex that checks in a string if it contains one of the following html break tags?</p>
  
  <pre><code>&lt;br&gt;, &lt;br/&gt;, &lt;br &gt;, &lt;br /&gt;
  </code></pre>