JavaScriptCodeSnippets/PromiseRace.js at master · rnagasudhakar/JavaScriptCodeSnippets · GitHub

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const p1 = new Promise((resolve, reject) => {
  setTimeout(() => {
    resolve("Promise 1 is resolved");
  }, 500);
});

const p2 = new Promise((resolve, reject) => {
  setTimeout(() => {
    reject("Error in p2");
    // resolve("Promise 2 is resolved");
  }, 300);
});

const p3 = new Promise((resolve, reject) => {
  setTimeout(() => {
    resolve("Promise 3 is resolved");
  }, 1000);
});

const p4 = new Promise((resolve, reject) => {
  setTimeout(() => {
    resolve("Promise 4 is resolved");
  }, 700);
});

const p5 = [p1, p2, p3, p4];

function PromiseRace(p5) {
  return new Promise((resolve, reject) => {
    p5.forEach((promise) => {
      promise
        .then((val) => {
          resolve(promise);
        })
        .catch((err) => {
          reject(promise);
        });
    });
  });
}

PromiseRace(p5)
  .then((val) => {
    console.log(val);
  })
  .catch((error) => {
    console.log(error);
  });