JSFiddle - React, Tailwind, and code Playground

by alsjka

HTML

<table id="test">
<theader>
  <tr>
      <th></th>
    <th>tblh1</th>
        <th>tblh1</th>
            <th>tblh1</th>
  </tr>
</theader>
<tbody>
  <tr>
    <td></td>
  </tr>
  <tr>
    <td></td>
  </tr>
  <tr>
    <td></td>
  </tr>
</table>
</tbody>

JavaScript

// target specific table

var row = document.querySelectorAll("table#test tr");
for (var i = 0; i < row.length; i++) {
  row[i].textContent = "RowIndex is " + row[i].rowIndex;
}