JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr><td>tr</td></tr>
    <tr><td>tr</td></tr>
    <tr><td>tr</td></tr>
    <tr><td>tr</td></tr>
    <tr><td>tr</td></tr>
</table>

CSS

table tr.odd {
  background: #ccc;
}

JavaScript

$('table tr:odd').addClass('odd');

(function () {
  var count = 0;

  $('table').click(function () {
    count += 1;

    if (count == 2) {
      // come code
      $('table tr:odd').removeClass('odd');
    }
  });
})();