JSFiddle - React, Tailwind, and code Playground

by Viet27th

JavaScript

const aaray = [...Array(10000).keys()];
const baray = [...Array(10000).keys()];

const a = () => {
	return new Promise((resolve, reject) => {
    for (const x of aaray) {
      console.log("==Aaray", x);
    }
    resolve(true);
  })
};

const b = () => {
	return new Promise((resolve, reject) => {
    for (const x of baray) {
      console.log("--Baray", x);
    }
    resolve(true);
  })
};

const test = async () => {
	const data = await Promise.all([b(), a()]);
  console.log("++++++", data);
  return data;
}

console.time("test_timer");
test();
console.timeEnd("test_timer");
console.log("xxx")