Run results for: for vs for of2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:122.0) Gecko/20100101 Firefox/122.0

Browser: Firefox 122

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

for

587/s

for of

165/s

View exact numbers

Test name	Executions per second
✓ for	587 Ops/sec
for of	165 Ops/sec

Script Preparation code:

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

Tests:

for
let counter = 0; for (var index = 0; index < data.length; index++) { var obj = data[index]; if (obj == obj) counter++; } console.log(counter);
for of
let counter = 0; for (var obj of data) { if (obj == obj) counter++; } console.log(counter);