JSFiddle - React, Tailwind, and code Playground

HTML

<table id="example"width="100%" border="1" cellpadding="0" cellspacing="0">
 <tr>
   <td>1</td>
   <td>2</td>
   <td>3</td>
 </tr>
 <tr>
   <td>4</td>
   <td>5</td>
   <td>6</td>
 </tr>
 <tr>
   <td>7</td>
   <td>8</td>
   <td>9</td>
 </tr>

JavaScript

function readValues(evt){
	var elem = evt.target.parentElement;
  console.log(elem);	//elem contains current tr element's data
}

var elem = document.querySelectorAll("#example tr");

for(var i=0;i<elem.length;i++){
	bindMe(elem[i]);
}

function bindMe(elem){
	elem.addEventListener("click", function(evt){ 
	readValues(evt);
	});
}