JSFiddle - React, Tailwind, and code Playground

HTML

<table>
  <tr>
    <th>name</th>
    <th>time</th>
    <th>other</th>
  </tr>
  <tr>
    <td>January</td>
    <td>$100</td>
    <td>123</td>
  </tr>
  <tr>
    <td>January</td>
    <td>$100</td>
    <td>123</td>
  </tr>
</table>

JavaScript

var b;
 var findindex=-1;
  var target;
$(function(){
  var time = $('tr:first > th');
  
  $.each(time,function(index,value){
  	 if( (value.innerHTML) == "time"  ){
       console.log(index);
	   findindex = index;
     }   
  })
  $('td').on('click',function(){
    $.each($('td'),function(index,value){
		$(value).css("color","black");
	})	;
	b=$(this).parent();
	console.log(findindex);
    console.log( b.find("td")[findindex] );
	target=b.find("td")[findindex];
	$(target).css("color","red")
  })
	
});