Run results for: Array Entries vs fori

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Browser: Chrome 116

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Array.entries	22995.7 Ops/sec
Array for i	1489.7 Ops/sec

Script Preparation code:

var as = [];
for (var i = 0; i < 10000; i++) {
  as.push(Math.floor(Math.random() * 1000));
}

AخA
 
var as = [];for (var i = 0; i < 10000; i++) {  as.push(Math.floor(Math.random() * 1000));}

Tests:

Array.entries
const res = []; for(const a of as.entries()) res.push(a);
const res = [];
for(const a of as.entries()) res.push(a);

const res = [];
for(let i = 0; i < as.length; i++) {
  const a = as[i];
  res.push(a);
}

 
const res = [];for(let i = 0; i < as.length; i++) {  const a = as[i];  res.push(a);}