JSFiddle - React, Tailwind, and code Playground

HTML

<div id="Outer">
   <table>
     <tr><td>1</td><td>Rama</td><td>8088080980</td></tr>
     <tr><td>2</td><td>Krishna</td><td>454546</td></tr>
   </table>
</div>

JavaScript

$('#Outer td').on('mouseenter', function() {
   $(this).css('background-color','#CCC');
}).on('mouseleave', function() {
   $(this).css('background-color','');
});