irridescentrambler

# == Schema Information
#
# Table name: accounts
#
#  id         :bigint           not null, primary key
#  balance    :integer
#  created_at :datetime         not null
#  updated_at :datetime         not null
#

irridescentrambler

function main(){
  console.log("I'll have my breakfast");
  setTimeout(() => {
    console.log("I'll have my lunch");	
  }, 0);
  console.log("I'll have my dinner");
}

main();

irridescentrambler

async function myFirstAsyncFunction(){
  return "Hello"
}

myFirstAsyncFunction().then((result) => {
  console.log(result);
});

// Output 
// Hello

irridescentrambler

function callDogApi(url){
  const promise = fetch(url);
  promise.then((response)=> {
    if(response.status === 200){
      console.log('Api call successful');
      console.log(response);	
    }else{
      throw new Error(response.status);
    }
  }).catch((error)=> {

irridescentrambler

async function getData(url){
  const response = await fetch(url);
  console.log(response);
}

getData('https://dog.ceo/api/breeds/image/random');
getData('https://dog.ceo/api/breed/Husky/images/random');

irridescentrambler

// Just a normal function, not an async function.
function firstFunction(){
  return new Promise((resolve, reject)=> {
  var randomNumber = (Math.floor(Math.random() * 100) % 2);
    if(randomNumber === 0){
    	setTimeout(() => {
          resolve("Number is even");
        }, 3000);
    }else {
    	setTimeout(() => {

irridescentrambler

new Promise((resolve, reject) => {
    console.log('Initial');

    resolve();
})
.then(() => {
    throw new Error('Something failed');
        
    console.log('Do this');
})

irridescentrambler

let promise1 = new Promise((resolve, reject) => {
  setInterval(() => {
    reject("This is rejected");
  }, 10000);
});

promise1.catch((errorResponse) => {
  console.log(errorResponse);
})

irridescentrambler

let promise1 = new Promise((resolve, reject) => {
  setInterval(() => {
    resolve("Resolved the promise");
  }, 10000)
});

// promise.then(callback_for_resolved, callback_for_rejected)
promise1.then(
  (successResponse) => {
    console.log(successResponse);    

irridescentrambler

// Resolved promise
let promise1 = new Promise((resolve, reject) => {
  resolve("Resolved this promise")
});

// Rejected promise
let promise2 = new Promise((resolve, reject) => {
  reject("Rejected the promise");
});