JSFiddle - React, Tailwind, and code Playground

HTML

<form>
    <input type="radio" name="color" id="color_red" value="red" /> Red
    <input type="radio" name="color" id="color_green" value="green" /> Green
    <input type="radio" name="color" id="color_blue" value="blue" /> Blue
</form>

JavaScript

document.getElementById('color_red').focus();