title: Zoom in and out buttons on World Map using D3
body: <p>I need to add the zoom in and out button on the world map using D3, but I am unable to implement it. Currently my code is featured on this link:
  <a href="https://digitalxlabs.com/animated-banners/world-map-template12.php" rel="nofollow">https://digitalxlabs.com/animated-banners/world-map-template12.php</a></p>
  
  <pre><code>Username: DXLdemo
  
  Password: View@098#
  </code></pre>
  
  <p>I've tried using the Mike Bostock's example for adding the Zoom button 3, but I am unable to implement it. Can someone please look into this and let me know this can be done. </p>