JSFiddle - React, Tailwind, and code Playground
HTML
<button class="btn1">btn1</button>
<button class="btn2">btn2</button>
JavaScript
$(document).on('click', '.btn1', '.btn2', function() {
alert('click');
});
<button class="btn1">btn1</button>
<button class="btn2">btn2</button>
$(document).on('click', '.btn1', '.btn2', function() {
alert('click');
});