Run results for: for loops 2024-05-30

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser: Chrome 125

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

warmup

4.7M/s

for ... of

43K/s

forEach

39K/s

some

39K/s

map

38K/s

reduce

29K/s

for

28K/s

while

24K/s

View exact numbers

HTML Preparation code:

<h1>Test different js loops</h1>

Script Preparation code:

var array = Array.from({ length: 100 }, () => (Math.random() * 1000).toFixed(4));
array.push(1000.0000);

Tests:

warmup
for (let i = 0, len = array.length; i < len; i++) {}
for
let sum1 = 0; for (let i = 0, len = array.length; i < len; i++) { sum1 += parseFloat(array[i]); }
for ... of
let sum2 = 0; for (const num of array) { sum2 += parseFloat(num); }
forEach
let sum3 = 0; array.forEach(num => { sum3 += parseFloat(num); });
map
let sum4 = 0; array.map(num => { sum4 += parseFloat(num); });
reduce
let sum5 = array.reduce((sum, num) => sum + parseFloat(num), 0);
while
let sum6 = 0; let i = 0; while (i < array.length) { sum6 += parseFloat(array[i]); i++; }
some
let sum7 = 0; array.some(num => { sum7 += parseFloat(num); });