Question:

Explain how the Node appendChild method works and give at least one example of its usage.

The appendChild property is used to append an element node to a parent node.

 
 /*
   <ul>
       <li>foo</li>
       <li>bar</li>
       <li>zar</li>
   </ul>
 */

var ul = document.querySelector('ul');
var elem = document.createElement('li');
var text = document.createTextNode('car');

elem.append(text);  // <div>car</div>

 ul.appendChild(elem); 

 /* result

    <ul>
       <li>foo</li>
       <li>bar</li>
       <li>zar</li>
       <li>car</li>
   </ul>

  */