Run results for: Lodash each vs Object.entries.forEach vs for...in

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 11_2_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.146 Safari/537.36

Browser: Chrome 88

Operating system: Mac OS X 11.2.0

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
lodash.each	212173.5 Ops/sec
Object.entries.forEach	43869.8 Ops/sec
for...in	77688.8 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var data100 = _.fill(Array(100), 1).reduce((r, v, i) => (r[`k${i}`] = v, r), {});
var data1000 = _.fill(Array(1000), 1).reduce((r, v, i) => (r[`k${i}`] = v, r), {});

Tests:

lodash.each
var sum = 0; _.each(data100, (v, k) => sum+=v)
Object.entries.forEach
var sum = 0; Object.entries(data100).forEach(([v, k]) => sum+=v)
for...in
var sum = 0; for (let k in data100) { sum+=data100[k]; }

Run results for: Lodash each vs Object.entries.forEach vs for...in

lodash.each

Object.entries.forEach

for...in