JSFiddle - React, Tailwind, and code Playground
HTML
<select name="selectmenu1" id="selectmenu1">
<option value="o1">
a
</option>
<option value="o2">
b
</option>
<option value="o3">
c
</option>
<option value="o4">
d
</option>
</select>
<div id="getval" ></div>
JavaScript
function displayVals() {
var singleValues = $("select").val();
$("#getval").html(singleValues);
}
$('#selectmenu1').change(function() {
displayVals();
});