title: Remove elements of an array from another array using javascript
body: <p>I have two arrays</p>
  <pre><code>a[] = [1,2,3,4]
  b[] = [1,4]
  </code></pre>
  <p>Need to remove elements of array b from array a.</p>
  <p>Expected output:</p>
  <pre><code> a[] = [1,4]
  </code></pre>