Run results for: Fastest way to check if object is empty

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/121.0.6167.171 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 121

Operating system: iOS 17.2

Device Platform: Mobile

Date tested: 2 years ago

object.keys()

11.1M/s

JSON.stringify()

8.5M/s

View exact numbers

Test name	Executions per second
✓ object.keys()	11,103,841 Ops/sec
JSON.stringify()	8,456,219 Ops/sec

Script Preparation code:

var xxx = {}

Tests:

object.keys()
Object.keys(xxx) === 0
JSON.stringify()
JSON.stringify(xxx) === "{}"

Run results for: Fastest way to check if object is empty

You don't need to make add for loops in your test scenarios, the benchmark does it itself.

object.keys()

JSON.stringify()