JSFiddle - React, Tailwind, and code Playground

HTML

<span class="dss">  lskdja;ldsjasldk </span>

<span class="dslkj">  lskdja;ldsjasldk </span>
<span class="sdlkjsdlkj">  lskdja;ldsjasldk </span>
<span class="sldkjlsdkj">  lskdja;ldsjasldk </span>

JavaScript

$('span').on('click', function(){
var classes = $(this).attr('class');
console.log(classes)   //if there are more than one class do classes.split(' ')
})