JSFiddle - React, Tailwind, and code Playground

HTML

<body>

<table>
  <tr>
    <td>один</td> <td>два</td>
  </tr>
  <tr>
    <td>три</td>  <td>четыре</td>
  </tr>
</table>

<script>
var table = document.body.children[0];

alert( table.firstElementChild.cells[1].innerHTML )
</script>

</body>