title: How can I get the text only (no tags) from a HTML document?
body: <p>I have a HTML page, and I want the text only (all text nodes).</p>
  
  <h3>Example HTML</h3>
  
  <pre><code>&lt;span&gt;hello &lt;strong&gt;sir&lt;/strong&gt;&lt;/span&gt;
  </code></pre>
  
  <h3>Desired Output</h3>
  
  <pre><code>hello sir
  </code></pre>