JSFiddle - React, Tailwind, and code Playground

HTML

<table id="tabelle">
<tr>
<td>Hallo</td>
<td>weitere Spalte</td>
<td><input type="submit" onclick="jsMethode()" /></td>
</tr>
<tr>
<td>Hallo2</td>
<td>weitere Spalte2</td>
<td><input type="submit" onclick="jsMethode()" /></td>
</tr>
</table>

JavaScript

$('#tabelle').delegate(':submit', 'click', function (e) {
    var text = $(this).closest('tr').children(':first').html();
  alert(text);
});