multiplecallbacks.js

function doTogether(firstCallback, secondCallback){
    firstCallback();  //execute the first function
    secondCallback();  //execute the second function
    console.log('Fullstack Journey');
}

function LeanFrontEnd() {
    console.log('Start with js');
}

function LearnBackend() {
    console.log('start with Node');
}

//pass in the callbacks to do them together
doTogether(LeanFrontEnd, LearnBackend);