JSFiddle - React, Tailwind, and code Playground

HTML

<select id=“test-dropdown”>

    <option value=“1”>One</option>

    <option value=“2”>Two</option>

    <option value=“3”>Three</option>

    </select>

JavaScript

$( "select" )
.change(function () {
var str = "";
$( "select option:selected" ).each(function() {
str += $( this ).text() + " ";
});
alert(str)
})