title: Cannot read property 'innerHTML' of null in IF statement
body: <p>I have the error:</p>
  
  <blockquote>
    <p>"Cannot read property 'innerHTML' of null"  at attacked (JS.js:172).</p>
  </blockquote>
  
  <p>However the concerned line is:</p>
  
  <pre><code>if (document.getElementById("enem").innerHTML  != null)
  </code></pre>
  
  <p>Which was made especially to solve this problem (last time I had this problem so I added this IF and it's still erroneous.</p>