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

Run details:

User agent: Mozilla/5.0 (X11; CrOS x86_64 14541.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser: Chrome 132

Operating system: Chrome OS 14541.0.0

Device Platform: Desktop

Date tested: one year ago

forEach

37/s

values

6/s

for loop

6/s

View exact numbers

Script Preparation code:

const data = new Set
for (let i = 0; i < 1000000; i++) {
  data.add(i)
}
let sum = 0
function forEach(v) {
sum+=v
}

Tests:

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