Run results for: for vs for of

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

Test name	Executions per second
for	890.0 Ops/sec
for of	171.5 Ops/sec

Script Preparation code:

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

Tests:

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