Run results for: iterators vs callbacks

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:136.0) Gecko/20100101 Firefox/136.0

Browser: Firefox 136

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

callback

662/s

iterator

145/s

View exact numbers

Test name	Executions per second
✓ callback	662 Ops/sec
iterator	145 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(); });