Run results for: Fastest way to check if object is empty using length 2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser: Chrome 129

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

For loop

24.1M/s

object.keys()

10.2M/s

JSON.stringify()

8.2M/s

View exact numbers

Script Preparation code:

var xxx = {}

Tests:

object.keys()
Object.keys(xxx) === 0
JSON.stringify()
JSON.stringify(xxx) === "{}"
For loop
for (var key in xxx) { if (hasOwnProperty.call(value, key)) { return false; } }