Run results for: Access property directly vs Getter/Setter

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser: Chrome 136

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Set to setter

229.1M/s

Read from getter

224.6M/s

Read directly from prop

218.9M/s

Set directly to prop

218.9M/s

View exact numbers

Test name	Executions per second
✓ Set to setter	229,140,176 Ops/sec
Read from getter	224,582,272 Ops/sec
Read directly from prop	218,930,368 Ops/sec
Set directly to prop	218,862,320 Ops/sec

Script Preparation code:

class Foo {
	bar = {
      a: {
        val: 123
      }
    }

	get propAccessor() {
		return this.bar.a.val;
	}

	set propAccessor(val) {
		this.bar.a.val = val;
	}
}

var obj = new Foo();

Tests:

Read directly from prop
var value = obj.bar.a.val;
Set directly to prop
obj.bar.a.val = 123;
Read from getter
var value = obj.propAccessor;
Set to setter
obj.propAccessor = 123;