Run results for: set vs array iteration + for each - large arrays

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.0

Browser: Firefox 152

Operating system: Linux

Device Platform: Desktop

Date tested: one month ago

Array for Each

54K/s

array

44K/s

Set for Each

32K/s

set

14K/s

View exact numbers

Test name	Executions per second
✓ Array for Each	53,713 Ops/sec
array	44,295 Ops/sec
Set for Each	31,559 Ops/sec
set	14,383 Ops/sec

Script Preparation code:

const base = Array.from(Array(10000).keys())

var a = base.map(Math.random);
var b = new Set(base.map(Math.random))
var c = new Set(base.map(Math.random))
var d = base.map(Math.random);

Tests:

array
for (const x of a) {}
set
for (const x of b) {}
Array for Each
d.forEach(_ => _)
Set for Each
c.forEach(_ => _)