Run results for: hasOwnProperty vs Object.keys to check whether an Object is empty

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36 OPR/81.0.4196.60

Browser: Opera 81

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
hasOwnProperty	5663571.5 Ops/sec
Object.keys	3866446.8 Ops/sec

Script Preparation code:

var props = {a:1,b:1,c:1,d:1,e:1,f:1,g:1,h:1,i:1,j:1,k:1,l:1,m:1,n:1,o:1,p:1,q:1,r:1,s:1,t:1,u:1,v:1,w:1,x:1,y:1,z:1};

Tests:

hasOwnProperty
var hasKeys = false; for (var key in props) { if (props.hasOwnProperty(key)) { hasKeys = true; break; } }
Object.keys
var hasKeys = Object.keys(props).length > 0