Run results for: for-in vs Object.keys.forEach vs Object.keys with for loop vs Object.entries

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:79.0) Gecko/20100101 Firefox/79.0

Browser: Firefox 79

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 3 years ago

Script Preparation code:

var obj = {
    'a': 1,
    'b': 2,
    'c': 3,
    'd': 4,
    'e': 5,
    'f': 6,
    'g': 7
};

Tests:

for-in
for (var i = 10000; i > 0; i--) { for (var key in obj) { if (obj.hasOwnProperty(key)) { console.log(obj[key]); } } }
Object.keys.forEach
for (var i=10000; i > 0; i--) { Object.keys(obj).forEach(key => console.log(obj[key])); }
Object.keys with for of loop
for (var i=10000; i > 0; i--) { for (var key of Object.keys(obj)) { console.log(obj[key]); } }
Object.entries
for (var i=10000; i > 0; i--) { for (const [key, value] of Object.entries(obj)) { console.log(value); } }