title: JavaScript: How to reverse a number?
body: <p>Below is my source code to reverse (as in a mirror) the given number.
  I need to reverse the number using the reverse method of arrays.</p>
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script&gt;
     
      var a = prompt("Enter a value");
      var b, sum = 0;
      var z = a;
      while(a &gt; 0)
      {
        b = a % 10;
        sum = sum * 10 + b;
        a = parseInt(a / 10);
      }
      alert(sum);
  &lt;/script&gt;</code></pre>
  </div>
  </div>
  </p>