Will Sentance FEMasters CS Bin Promises - http://csbin.io/promises

cs-bin-gists.js

// Challenge 1

function sayHello() {
  setTimeout(() => console.log('Hello'), 1000);
}

// Uncomment the line below when ready
sayHello(); // should log "Hello" after 1000ms


// Challenge 2
var promise = new Promise(function (resolve, reject) {
  // ADD CODE HERE
	setTimeout( function () {
    resolve('Resolved!')
  }, 1000);
});

// Should print out "Resolved!"
// ADD CODE HERE
promise.then(res => console.log(res))


// Challenge 3

promise = new Promise(function(resolve, reject) {
  // ADD CODE HERE
  reject('Rejected!');
})

// Should print out "Reject!"
// ADD CODE HERE
promise.then(null, err => console.log(err))


// Challenge 4

promise = new Promise(function (resolve, reject) {
  // ADD CODE HERE
  resolve()
});

// Uncomment the lines below when ready
promise.then(() => console.log('Promise has been resolved!'));
console.log("I'm not the promise!");


// Challenge 5
function delay(){
  return new Promise(function (resolve, reject) {
    return setTimeout(resolve, 1000);
  })
}

// Uncomment the code below to test
// This code should log "Hello" after 1000ms
delay().then(sayHello);


// Challenge 6
//
// ADD CODE BELOW
var secondPromise = new Promise(function (resolve, reject) {
  resolve('Second!');
})
var firstPromise = new Promise(function (resolve, reject) {
  resolve(secondPromise);
})

firstPromise.then(res => console.log(res))


// Challenge 7
const fakePeople = [
  { name: 'Rudolph', hasPets: false, currentTemp: 98.6 },
  { name: 'Zebulon', hasPets: true, currentTemp: 22.6 },
  { name: 'Harold', hasPets: true, currentTemp: 98.3 },
]

const fakeAPICall = (i) => {
  const returnTime = Math.floor(Math.random() * 1000);
  return new Promise((resolve, reject) => {
    if (i >= 0 && i < fakePeople.length) {
      setTimeout(() => resolve(fakePeople[i]), returnTime);
    } else {
      reject({ message: "index out of range" });
    }
  });
};

function getAllData() {
  const promises = [];
  let i = 0;
  while (i < fakePeople.length) {
    promises.push(fakeAPICall(i))
    i++;
  }
  // CODE GOES HERE
  return Promise.all(promises).then(res => {
    return res
  })
}

getAllData().then(res => console.log(res));