DOM children

For the page:

          <html>
<body>
  <div>Users:</div>
  <ul>
    <li>John</li>
    <li>Pete</li>
  </ul>
</body>
</html>
        

How to access:

The <div> DOM node?
The <ul> DOM node?
The second <li> (with Pete)?

There are many ways, for instance:

The <div> DOM node:

          document.body.firstElementChild
// or
document.body.children[0]
// or (the first node is space, so we take 2nd)
document.body.childNodes[1]
        

The <ul> DOM node:

          document.body.lastElementChild
// or
document.body.children[1]
        

The second <li> (with Pete):

          // get <ul>, and then get its last element child
document.body.lastElementChild.lastElementChild
        