JavaScript Promise

promise.js

var calculationPromise = new Promise(function(resolve,reject){
  setTimeout(function() {
    resolve(1+1);
  }, 1000)
  
});

var calculationPromise2 = new Promise(function(resolve,reject){
  setTimeout(function() {
    resolve(2+2);
  }, 500)
  
});


function addTwo(value){
  return value * 2;
};

function printFinalValue(nextValue) {
  console.log('the final value is '+ nextValue);
}

calculationPromise
  .then(addTwo)
  .then(printFinalValue);

calculationPromise2
  .then(addTwo)
  .then(printFinalValue);

promises.js

var calculationPromise = new Promise(function(resolve, reject){
  setTimeout(function (){
  resolve(1+1);
},1000)
});

function addTwo(value) {
  return value + 2;
};

function printFinalValue (nextValue) {
  console.log('The final value is', nextValue);
}

calculationPromise
    .then(addTwo)
    .then(printFinalValue);