title: Document.getElementById on CKEditor body returning null
body: <p>I need to set the spellcheck attribute of the rich text editor provided by Salesforce to true. However, the body component on which the attribute is specified always returns null.</p>
  
  <p>Due to this I am not able to change the attribute value. What am I doing wrong? I am not even able to use jQuery selectors for the same.</p>
  
  <pre><code>&lt;apex:page &gt;
    &lt;apex:form &gt;
      &lt;apex:inputTextarea richText="true" id="rta"/&gt;
    &lt;/apex:form&gt;
    &lt;script&gt;
      alert(document.getElementById('j_id0:j_id1:rta_rta_body'));
    &lt;/script&gt;
  &lt;/apex:page&gt;
  </code></pre>