JSFiddle - React, Tailwind, and code Playground

by Conor

HTML

<select id="myselect">
    <option value="0">One</option>
    <option value="1">Two</option>
    <option value="2">Three</option>
</select>
<br />
<input type="text" id="txtData" style="display:none;" />

JavaScript

$('#myselect').change(function() {
    if($(this).val() == 2)
        $('#txtData').show();
    else
        $('#txtData').hide();
});