Run results for: Callback vs Promise2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser: Chrome 119

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Callback

1.4M/s

Promise

1.3M/s

View exact numbers

Test name	Executions per second
✓ Callback	1,386,599 Ops/sec
Promise	1,260,544 Ops/sec

Script Preparation code:

function carlosWithPromise() {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      return resolve(5);
    });
  })
}

function carlosWithCallback(callback) {
  window.setTimeout(() => {
    callback(100);
  });
}

Tests:

Promise
carlosWithPromise() .then(parametro => { console.log('parametro: ', parametro); });
Callback
carlosWithCallback((param) => console.log('params::', param));