JSFiddle - React, Tailwind, and code Playground
HTML
<select name="foo" class="lead-action">
<option value="a">A</option>
<option value="b">B</option>
<option value="c">C</option>
<option value="d">D</option>
</select>
JavaScript
$(document).on('mouseup', '.lead-action', function() {
var foo = $(this).val();
console.log(foo);
});