JSFiddle - React, Tailwind, and code Playground

HTML

<select id="box1" onChange="myNewFunction(this);">
<option value="98">dog</option>
<option value="7122">cat</option>
<option value="142">bird</option>
</select>

<div id="test"></div>

JavaScript

function myNewFunction(element) {
    var text = element.options[element.selectedIndex].text;
    document.getElementById("test").innerHTML = text;
}