Run results for: for-in vs object.keys vs object.entries

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36

Browser: Chrome 79

Operating system: Linux

Device Platform: Desktop

Date tested: 4 years ago

Script Preparation code:

var obj = {
  'a': 1,
  'b': 1,
  'c': 1,
  'd': 1,
  'e': 1,
  'f': 1,
  'g': 1
};

Tests:

for-in
for (var i=10000; i > 0; i--) { for (var key in obj) { } }
Object.keys
for (var i=10000; i > 0; i--) { Object.keys(obj).forEach(key => {}); }
object.entries
for (var i=10000; i > 0; i--) { Object.entries(obj).forEach(([key, value]) => {}); }