title: Are booleans valid JSON
body: <p>Why do some JSON validators flag a boolean value as invalid JSON, and others as valid? That is, just <code>true</code> or <code>false</code> values (no object).</p>
  
  <p>Valid:</p>
  
  <ul>
  <li><a href="http://jsonlint.com/" rel="noreferrer">http://jsonlint.com/</a>  </li>
  <li><a href="http://codebeautify.org/jsonvalidator" rel="noreferrer">http://codebeautify.org/jsonvalidator</a></li>
  </ul>
  
  <p>Invalid:</p>
  
  <ul>
  <li><a href="https://jsonformatter.curiousconcept.com/" rel="noreferrer">https://jsonformatter.curiousconcept.com/</a></li>
  </ul>