title: How to put a variable inside quotes JS
body: <p>I'm trying to select a specific audio element based on the key that's pressed.  The issue is the compiler is reading the variable as a string.  How can I get it to read it as a variable?</p>
  
  <pre><code>var hail = e.keyCode 
   var afile = document.querySelector("audio[data-id='hail']")
  </code></pre>