JSFiddle - React, Tailwind, and code Playground
HTML
<select id="cities" name="cities" onchange="getLoca()">
<option value="0">--City-- </option>
<option value="1">City1</option>
<option value="2">City2</option>
<option value="3">City3</option>
<option value="4">City4</option>
<option value="5">City5</option>
</select>;
<select id="loca" name="loca" style="width: 170px" ></select>
<script type="text/javascript">
function getLoca() {
alert("yes");
}
</script>