JSFiddle - React, Tailwind, and code Playground
HTML
<div class="sameClassName" id="aa">test1</div>
<div class="sameClassName" id="ab">test2</div>
<div class="sameClassName" id="ac">test3</div>
<table>
<td class="sameClassName" id="aaa">test1</td>
<td class="sameClassName" id="aba">test2</td>
<td class="sameClassName" id="aca">test3</td>
</table>JavaScript
$(".sameClassName").on('click', function(){
alert($(this).attr('id'));
});