JSFiddle - React, Tailwind, and code Playground
HTML
<button class="b1"> Hello </button>
<button class="b2"> Hi </button>
JavaScript
$('body').on('click', function(evt){
if($(evt.target).is('.b1')){
console.log('world!');
}
});
/*
$('.b1').on('click', function(evt){
console.log('mondo!');
});
*/