title: Google Tag Manager Parse Error. Primary Expression
body: <p>I am trying to save this Custom Javascript Variable within Google Tag Manager and return this error each time:</p>
  
  <p>Error at line 2, character 4: Parse error. primary expression expected</p>
  
  <pre><code>var prodID = function pID() {
  return document.querySelector(".no-display &gt; input[name=product]").value;
  }();
  </code></pre>
  
  <p>Can someone help me? I believe I have a primary expression.</p>