Run results for: for ... of vs for ... in for array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36

Browser: Chrome 83

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
for ... in	1376.8 Ops/sec
for ... of	1692.0 Ops/sec

Script Preparation code:

var array = [1,2,3,4,5,6,7,8,9,10];

Tests:

for ... in
for (let index in array) { if (array.hasOwnProperty(index)) { console.log(array[index]); } }
for ... of
for (let element of array) { console.log(element); }