JSFiddle - React, Tailwind, and code Playground

HTML

<div id="smallcart"><span id="test_1" class="plusone">Click me!</span></div>

JavaScript

$('#smallcart .plusone').live('click',function(){
   var id = $(this).attr('id');
   articlenr = id.split("_")[1];
    alert(articlenr);
});