Run results for: _.isEmpty vs Object.keys.length vs custom isEmpty method (10000) alt is empty

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

isEmpty

2K/s

Object.keys().length

2K/s

_.isEmpty

2K/s

View exact numbers

Test name	Executions per second
✓ isEmpty	2,428 Ops/sec
Object.keys().length	2,424 Ops/sec
_.isEmpty	2,418 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script>

Script Preparation code:

window.obj = {};

for (var i = 0, len = 10000; i < len; i++) {
  obj['key' + i] = 'value' + i;
}

function isEmpty(obj) {
  for (const prop in obj) return false
  return true;
}

Tests:

_.isEmpty
_.isEmpty(window.obj);
Object.keys().length
Object.keys(window.obj).length === 0;
isEmpty
isEmpty(window.obj)