JSFiddle - React, Tailwind, and code Playground

by Nakul Kundra

HTML

<label for="first_name">First Name</label>
<input type="text" name="name" id="name" />

<label for="surname">Surname</label>
<input type="text" name="surname" />

<label for="firstname">Firstname</label>
<input type="text" name="firstname" id="firstname" disabled="disabled" />

JavaScript

$('#name').change(function() {
    $('#firstname').val($(this).val());
});