<table id="myTable">
<tr>
<td>foo</td> <td>foo</td> <td class="deleteRow">X</td>
</tr>
<tr>
<td>bar</td> <td>bar</td> <td class="deleteRow">X</td>
</tr>
<tr>
<td>hello</td> <td>world</td> <td class="deleteRow">X</td>
</tr>
</table>myTable.addEventListener('click', function(evt){
if(evt.target.closest('.deleteRow')) {
evt.target.closest('tr').remove()
}
})