Run results for: forEach vs forOwn

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36 OPR/54.0.2952.64

Browser: Opera 54

Operating system: Windows 7

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Array.prototype.forEach()	2.1 Ops/sec
_.forOwn()	2.3 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 anlagenStatus = Object.assign({}, _.range(10000).map((i) => ({
  status: `status_${i}`,
  statusDateneingang: `statusDateneingang_${i}`,
})));

Tests:

Array.prototype.forEach()
const anlagenStatusKeys = Object.keys(anlagenStatus); anlagenStatusKeys.forEach(function (anlagenStatusKey) { console.log(anlagenStatusKey); console.log(anlagenStatus[anlagenStatusKey].status); console.log(anlagenStatus[anlagenStatusKey].statusDateneingang); });
_.forOwn()
_.forOwn(anlagenStatus, ({ status, statusDateneingang }, systemId) => { console.log(systemId); console.log(status); console.log(statusDateneingang); });