title: Convert number to alphabet letter
body: <p>I want to convert a number to its corresponding alphabet letter. For example:</p>
  
  <pre><code>1 = A
  2 = B
  3 = C
  </code></pre>
  
  <p>Can this be done in javascript without manually creating the array?
  In php there is a range() function that creates the array automatically. Anything similar in javascript?</p>