Benchmark: loop through an array

Script Preparation code:

var arr = [];
for (let i = 0; i < 1000; ++i) {
  arr[i] = i;
}

function doSomething(value) {
  return Math.pow(value, 3) * 7;
}

Tests:

foreach with callBack
arr.forEach(item => { doSomething(item); });
foreach
arr.forEach(doSomething);
for with keeping length
const length = arr.length; for (let i = 0; i < length; i++) { doSomething(arr[i]); }
for
for (let i = 0; i < arr.length; i++) { doSomething(arr[i]); }
for / of
for (const value of arr) { doSomething(value); }
for / in
for (const value in arr) { doSomething(value); }
map
arr.map(doSomething);

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:80.0) Gecko/20100101 Firefox/80.0

Browser/OS: Firefox 80 on Windows

loop through an array (version: 0)