Run results for: for vs for of3

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
for	19.7 Ops/sec
for of	840.5 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++; }
for of
let counter = 0; for (const obj of data) { if (obj == obj) counter++; }