Run results for: iterators vs callbacks

Run details:

User agent: Mozilla/5.0 (Android 14; Mobile; rv:137.0) Gecko/137.0 Firefox/137.0

Browser: Firefox Mobile 137

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
iterator	155.6 Ops/sec
callback	690.8 Ops/sec

Script Preparation code:

function* iterator(size) {
 	for (let i = 0; i < size; i++) {
      yield i;
    }
}

function callback(size, cb) {
  for (let i = 0; i < size; i++) {
    cb(i);
  }
}

var N = 100000;

Tests:

iterator
let sum = 0; for (const i of iterator(N)) { sum += i*Math.random(); }
callback
let sum = 0; callback(N, i => { sum += i*Math.random(); });