Run results for: For of with entries vs basic for

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
for of entries	33.9 Ops/sec
for	7.7 Ops/sec

Script Preparation code:

var arr = Array.from({length: 1_000_000}).fill(0).map(() => Math.random())

Tests:

for of entries
const res = [] for (const [i, val] of arr.entries()) res.push(i+val)
for
const res = [] for (let i = 0; i < arr.length; i++) res.push(i+arr[i])