Run results for: for vs for of4

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

for

57/s

for of

6/s

View exact numbers

Test name	Executions per second
✓ for	57 Ops/sec
for of	6 Ops/sec

Script Preparation code:

var count = 1000 * 1000
var data = [];

do {
  data.push(count--);
} while(count);

Tests:

for
let sum = 0; for (const obj of data) { sum += obj; }
for of
let sum = 0; for (let index = 0; index < data.length; index++) { sum += data[index]; }