To set the position of the marker of the list-item, use the listStylePosition property. You can try to run the following code to set the position of the list-item marker with JavaScript −
Example
<!DOCTYPE html>
<html>
<body>
<ol id="myID">
<li>One</li>
<li>Two</li>
</ol>
<button type="button" onclick="displayInside()">Add list inside</button>
<button type="button" onclick="displayOutside()">Add list outside</button>
<script>
function displayInside() {
document.getElementById("myID").style.listStylePosition = "inside";
}
function displayOutside() {
document.getElementById("myID").style.listStylePosition = "outside";
}
</script>
</body>
</html>