Run results for: Direct access to property vs Getter/Setter

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36

Browser: Chrome 118

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Read directly from prop	39310880.0 Ops/sec
Set directly to prop	38952524.0 Ops/sec
Read from getter	39468868.0 Ops/sec
Set to setter	39211292.0 Ops/sec

Script Preparation code:

class MyObj {
	prop = undefined

	get propAccessor() {
		return this.prop;
	}

	set propAccessor(val) {
		this.prop = val;
	}
}

var obj = new MyObj();

Tests:

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

Run results for: Direct access to property vs Getter/Setter

Read directly from prop

Set directly to prop

Read from getter

Set to setter