Run results for: for vs for of5

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0

Browser: Firefox 121

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

for

250/s

for of

98/s

View exact numbers

Test name	Executions per second
✓ for	250 Ops/sec
for of	98 Ops/sec

Script Preparation code:

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

Tests:

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