<!DOCTYPE html>
<html>
<body>
<ul id="myList" style="list-style-position:inside;">
<li>Coffee</li>
<li>Tea</li>
<li>Water</li>
<li>Soda</li>
</ul>
<button type="button" onclick="myFunction()">Return list-item marker position</button>
<script>
function myFunction() {
alert(document.getElementById("myList").style.listStylePosition);
}
</script>
</body>
</html>