<!DOCTYPE html>
<html>
<body>
<div id="myDiv">This is a div element.</div>
<br>
<select onchange="myFunction(this);" size="10">
<option>none</option>
<option>hidden</option>
<option>dotted</option>
<option>dashed</option>
<option>solid</option>
<option>double</option>
<option>groove</option>
<option>ridge</option>
<option>inset</option>
<option>outset</option>
</select>
<script>
function myFunction(selectTag) {
var listValue = selectTag.options[selectTag.selectedIndex].text;
document.getElementById("myDiv").style.borderLeftStyle = listValue;
}
</script>
</body>
</html>