JSFiddle - React, Tailwind, and code Playground

HTML

<select id="dropDown" onChange="output(this)">
    <option value="0">Select something...</option>
    <option value="1">one</option>
    <option value="2">two</option>
    <option value="3">three</option>
</select>

JavaScript

function output(sender){
               alert(sender.options[sender.selectedIndex].text);
               alert(sender.options[document.getElementById("dropDowm")].text);
        }