es8 - async await - 3.js

es8 - async await - 3.js

function callback() {
    setTimeout(function () {
        console.log('1. First thing setting up second thing');
        setTimeout(function () {
            console.log('2. Second thing setting up third thing');
            setTimeout(function () {
                console.log('3. Third thing setting up fourth thing');
                setTimeout(function () {
                    console.log('4. Fourth thing setting up fifth thing');
                    setTimeout(function () {
                        console.log('5. Fifth thing');
                        setTimeout(function () {
                            console.log('End');
                        }, 0);
                    }, 1000);
                }, 1000);
            }, 1000);
        }, 1000);
    }, 1000);
}
callback();