<!DOCTYPE html>
<html>
<body>
<h3>A demonstration of how to access a LI element</h3>
<ol>
<li id="myLi">Coffee</li>
<li>Tea</li>
<li>Milk</li>
<li>Water</li>
</ol>
<p>Click the button to set the list items to increment from the number "300" instead of "1".</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction() {
var x = document.getElementById("myLi");
x.value = "300";
}
</script>
</body>
</html>