<!DOCTYPE html>
<html>
<head>
<script>
function removeOption() {
var x = document.getElementById("mySelect");
x.remove(x.selectedIndex);
}
</script>
</head>
<body>
<form>
<select id="mySelect">
<option>Apple</option>
<option>Pear</option>
<option>Banana</option>
<option>Orange</option>
</select>
<input type="button" onclick="removeOption()" value="Remove the selected option">
</form>
</body>
</html>