Benchmark: for, for..of, forEach

Script Preparation code:

var number = +prompt('Enter array length')
var arr = new Array(number).fill().map((_, i) => i);

function cb(i) {
  return i + i
}

Tests:

for of
for (const i of arr) { cb(i); }
forEach
arr.forEach((i) => { cb(i); });
forEach, separate callback
function _cb(i) { return cb(i) } arr.forEach((i) => { _cb(i); });
for
for (let i = 0; i < arr.length; i++) { cb(arr[i]) }
for, external len
const len = arr.length for (let i = 0; i < len; i++) { cb(arr[i]) }

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 13 days ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Browser/OS: Chrome 124 on Linux

for, for..of, forEach (version: 0)