Run results for: _.isEmpty vs Object.keys.length

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:142.0) Gecko/20100101 Firefox/142.0

Browser: Firefox 142

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

_.isEmpty

10.2M/s

Object.keys().length

5.9M/s

View exact numbers

Test name	Executions per second
✓ _.isEmpty	10,194,831 Ops/sec
Object.keys().length	5,935,624 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 = 100; i < len; i++) {
  obj['key' + i] = 'value' + i;
}

Tests: