Run results for: null prototype hasProperty

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 OPR/100.0.0.0 (Edition beta)

Browser: Opera 100

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
using in	5380731.5 Ops/sec
using hasOwnProperty call	2790085.5 Ops/sec

Script Preparation code:

o = Object.create(null)
o.foo = 'bar'
o.baz = 'qux'

Tests:

using in
if ('bar' in o) return true;
using hasOwnProperty call
Object.prototype.hasOwnProperty.call(o, 'bar')

Run results for: null prototype hasProperty

using in

using hasOwnProperty call