JSFiddle - React, Tailwind, and code Playground

HTML

<body>
<table>
<tbody>
  <tr class="my-tr">
    <td>one line</td>
  </tr>
  <tr class="my-tr">
    <td>one line</td>
  </tr>
  <tr class="my-tr">
    <td>one line</td>
  </tr>
  <tr class="my-tr">
    <td>one line</td>
  </tr>
  <tr class="my-tr">
    <td>one line</td>
  </tr>
  </tbody>
</table>
</body>

CSS

.tr-spacer
{
  height: 100px;
}

JavaScript

$(function () {
      $("tr.my-tr").after('<tr class="tr-spacer"/>');
});