title: Regular Expression to get content in statement
body: <p>Example : I have HTML code as below,</p>
  
  <pre><code>&lt;p &gt;&lt;strong&gt;PM Narendra Modi visits BJP headquarters&lt;/strong&gt;[youtube-video id='XHDUCalVmis' width='640' height='360' ]&lt;/p&gt;&lt;hr /&gt;
  </code></pre>
  
  <p>here I want to select only </p>
  
  <pre><code>[youtube-video id='XHDUCalVmis' width='640' height='360' ]
  </code></pre>
  
  <p>part. Thought regular expression will work out. </p>