JS Quiz 2 SECE

const myPromise = () => Promise.resolve('I have resolved!');

function firstFunction() {
  myPromise().then(res => console.log(res));
  console.log('second');
}

async function secondFunction() {
  console.log(await myPromise());
  console.log('second');
}

firstFunction();
secondFunction();

• • I have resolved!, second and I have resolved!, second

• second, I have resolved! and second, I have resolved!

• I have resolved!, second and second, I have resolved!

• second, I have resolved! and I have resolved!, second

What is it's value?
Promise.resolve(5);

• 5

• Promise {<pending>: 5}

• Promise {<resolved>: 5}

• Error

const colorConfig = {
  red: true,
  blue: false,
  green: true,
  black: true,
  yellow: false,
};

const colors = ['pink', 'red', 'blue'];

console.log(colorConfig.colors[1]);

• true

• false

• undefined

• TypeError

let name = 'Lydia';

function getName() {
  console.log(name);
  let name = 'Sarah';
}

getName();

• Lydia

• Sarah

• undefined

• ReferenceError

let config = {
  alert: setInterval(() => {
    console.log('Alert!');
  }, 1000),
};

config = null;

• The setInterval callback won't be invoked

• The setInterval callback gets invoked once

• The setInterval callback will still be called every second

• We never invoked config.alert(), config is null

const name = 'Lydia Hallie';

console.log(!typeof name === 'object');
console.log(!typeof name === 'string');

• false true

• true false

• true true

• false false

var p = new Promise((resolve, reject) => {
  return Promise.reject(Error('The Fails!'))
})
p.catch(error => console.log(error.message))
p.catch(error => console.log(error.message))

• print message once

• print message twice

• • UnhandledPromiseRejectionWarning

• process exits

var p = new Promise((resolve, reject) => {
  reject(Error('The Fails!'))
})
p.catch(error => console.log(error.message))
p.catch(error => console.log(error.message))

• print message once

• print message twice

• • • UnhandledPromiseRejectionWarning

• process exits

Promise.resolve('Success!')
  .then(data => {
    data.toUpperCase()
  })
  .then(data => {
    console.log(data)
  })

• • print "SUCCESS!"

• • print "Success!"

• • • print "SUCCESS!" and "SUCCESS!"

• • prints undefined

var p = new Promise((resolve, reject) => {
    reject(Error('The Fails!'))
  })
  .catch(error => console.log(error.message))
  .catch(error => console.log(error.message))

• • print error message once

• • print error message twice

• • UnhandledPromiseRejectionWarning

• • process exits