title: Decode HTML entities into plain text
body: <p>I have a string that includes <a href="https://www.freeformatter.com/html-entities.html" rel="nofollow noreferrer">HTML entities</a> (e.g. <code>&amp;plusmn;</code> - the plus minus symbol).</p>
  
  <p>How can I get the string with those HTML entities decoded into plain text?</p>
  
  <p>Examples:</p>
  
  <pre><code> Input          |  Output
  ----------------+-------------
  &amp;plusmn;        |    ±
  Ben &amp;amp; Jerry | Ben&amp;Jerry
  </code></pre>