JSFiddle - React, Tailwind, and code Playground

JavaScript

function a() {
    try
    {
        a.error.here;
    }
    catch(e)
    {
        $('body').append('<div>' + e.toString() + '</div>');
        throw e;
    }
}

function b() {
    try
    {
        b.error.here;
    }
    catch(e)
    {
        $('body').append('<div>' + e.toString() + '</div>');
        throw e;
    }
    
    setTimeout(b, 2000);
}

setInterval(a, 2000);
setTimeout(b, 2000);