Run results for: Set forEach() vs values() vs for loop

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

values

248/s

for loop

209/s

forEach

163/s

View exact numbers

Script Preparation code:

const data = new Set
for (let i = 0; i < 1000000; i++) {
  data.add(i)
}
window.data = data

Tests:

forEach
let sum = 0 window.data.forEach((v) => { sum += v }) console.log(sum)
values
let sum = 0 const itr = window.data.values() let res = itr.next() while (!res.done) { sum += res.value res = itr.next() } console.log(sum)
for loop
let sum = 0 for (const v of window.data) { sum += v } console.log(sum)