Promise.all (PromiseAPIs)

PromiseAll.js

// Promise.all

const p1 = new Promise((resolve, reject) => {
  setTimeout(() => resolve("P1 Sucess"), 3000);
});

const p2 = new Promise((resolve, reject) => {
  //setTimeout(() => resolve("P2 Sucess"), 1000);
  setTimeout(() => reject("P2 failure"), 1000);
});

const p3 = new Promise((resolve, reject) => {
  setTimeout(() => resolve("P3 Sucess"), 2000);
});

Promise.all([p1, p2, p3])
  .then((res) => {
    console.log(res);
  })
  .catch((err) => {
    console.error(err);
  });