рони, ok

<table>
   <tr>
        <td>0</td><td class="class"><span>00000000000000</span></td><td>0</td><td class="class">2</td>
   </tr>
   <tr>
        <td>0</td><td class="class">3</td><td>0</td><td class="class">4</td>
   </tr>
</table>
<script>
function highlight(item) {
   item.style.backgroundColor = "lightgreen";
}
var table = document.querySelector('table');
table.onclick = function(event) {
  var target = event.target;
   while(target != table) {
      if(target.classList.contains('class')) {
          highlight(target);
          return;
      }
      target = target.parentNode;
   }
};
</script>

Dilettante_Pro,
:) :victory: :thanks: