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/122.0.0.0 Safari/537.36

Browser: Chrome 122

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Read directly from prop

11.4M/s

Set directly to prop

10.0M/s

Read from getter

9.7M/s

Set to setter

9.5M/s

View exact numbers

Test name	Executions per second
✓ Read directly from prop	11,444,513 Ops/sec
Set directly to prop	10,042,814 Ops/sec
Read from getter	9,734,087 Ops/sec
Set to setter	9,545,868 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;