HOW CAN I GET THE lastElementChild OF JS OBJECT code example

Example: last element id javascript

<div id='print'>

                <p id=1>some data</p>
                <p id=2>some data</p>
                <p id=3>some data</p>
                <p id=4>some data</p>
                <p id=5>some data</p>

          </div>