JSFiddle - React, Tailwind, and code Playground

HTML

<button type="button" onclick="(foo('html'), bar('html'))">Clica-me</button>

JavaScript

function foo(quem) {
    console.log('foo', quem);
}

function bar(quem) {
    console.log('bar', quem);
}

var button = document.querySelector('button');
button.addEventListener('click', function() {
    foo('addEventListener');
    bar('addEventListener');
});