Run results for: for vs for of vs for in

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.1 Safari/605.1.15

Browser: Safari 13

Operating system: Mac OS X 10.15.5

Device Platform: Desktop

Date tested: 4 years ago

Tests:

const arr = Array(10000).fill(0);
const l = arr.length;
for (let i = 0; i < l; i++) {
  arr[i];
}

AخA
 
const arr = Array(10000).fill(0);const l = arr.length;for (let i = 0; i < l; i++) {  arr[i];}

const arr = Array(10000).fill(0);
for (let x of arr) {
  x;
}

 
const arr = Array(10000).fill(0);for (let x of arr) {  x;}

const arr = Array(10000).fill(0);
for (let i in arr) {
  arr[i];
}

 
const arr = Array(10000).fill(0);for (let i in arr) {  arr[i];}