JSFiddle - React, Tailwind, and code Playground

HTML

<button>Lalala</button>

JavaScript

$(function(){
    
    $('button').on('click', function(){
        lalala();
        poopoopoo();
    });
    
    function lalala(){
        console.log('lalala');
    }
    
});

function poopoopoo(){
    console.log('poopoopoo');
}