Run results for: instanceof vs in

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser: Chrome 130

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 5 days ago

Test name	Executions per second
instanceof test	8466752.0 Ops/sec
in test	15647790.0 Ops/sec

Script Preparation code:

class ClassFoo {
    constructor() {
        this.bar = 1;
    }
}

var Foo = ClassFoo;
var foo = new Foo();

Tests: