JSFiddle - React, Tailwind, and code Playground

HTML

<table id="table">
    <tr><td><input type="radio" name="sth" value="1">1</td><td>another td</td></tr>
    <tr><td><input type="radio" name="sth" value="2">2</td><td>another td</td></tr>
</table>

CSS

.newclass {
    background-color: #ffff00;
}

JavaScript

all_tds = $('#table td');

$(function () {
    $('input:radio').on('change', function () {
        all_tds.removeClass("newclass");
	    if (this.checked) {
	        $(this).parent().siblings("td").addClass("newclass"); 
	    }
 	});
});