Run results for: promise vs callback 123

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser: Chrome 132

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

callback

149.1M/s

async

86.9M/s

View exact numbers

Test name	Executions per second
✓ callback	149,096,384 Ops/sec
async	86,863,040 Ops/sec

Script Preparation code:

function promises() {
  return Promise.resolve(123)
}
function callbacks(cb) {
  return cb(123)
}

Tests: