JSFiddle - React, Tailwind, and code Playground

HTML

<div id='menu'>
    <input type="radio" id="swing" name="swing_type" value="Swing" /><label for="swing"> Swing</label><br />
    
    <input type="radio" id="slide" name="swing_type" value="Slide" /><label for="slide"> Slide</label>
</div>

JavaScript

var selected_options = new Object();
selected_options['swing_type'] = 'Slide';

var x;
for (x in selected_options){
    jQuery("#menu input[name="+ x +"][value="+ selected_options[x] +"]").attr('checked', 'checked');
}