JSFiddle - React, Tailwind, and code Playground
HTML
<div class='buynowlink' id='one'>1</div>
<div class='buynowlink' id='two'>2</div>
<div class='buynowlink' id='three'>3</div>
<div class='buynowlink' id='four'>4</div>
<div class='buynowlink' id='five'>5</div>
<div class='result'></div>
JavaScript
$(document).ready(function(){
$('.buynowlink').click(function(){
idName = this.id;
$('.result').html('Clicked ID : '+idName);
});
});