Run results for: foreach vs map by wayne

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:133.0) Gecko/20100101 Firefox/133.0

Browser: Firefox 133

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

foreach

5K/s

map

4K/s

View exact numbers

Test name	Executions per second
✓ foreach	5,254 Ops/sec
map	4,219 Ops/sec

Tests:

foreach
let arr = Array(10000); arr.fill({name: 'ddd', age: 123}); const newArr1 = [] const newArr2 = [] arr.forEach((v) => { newArr1.push(v.name) newArr2.push(v.age) })
map
let arr = Array(10000); arr.fill({name: 'ddd', age: 123}); const newArr2 = [] const newArr1 = arr.map((v) => { newArr2.push(v.age) return v.name })