Run results for: js private field

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.6 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

public

71K/s

private

2K/s

View exact numbers

Test name	Executions per second
✓ public	70,803 Ops/sec
private	2,406 Ops/sec

Tests:

private
class MyClass { #_propertyOne = 1; #_propertyTwo = 2; #_sum = 0; sumProperties() { for (let i = 0; i < 10_000; i++) this.#_sum += this.#_propertyOne + this.#_propertyTwo; } } new MyClass().sumProperties();
public
class MyClass { _propertyOne = 1; _propertyTwo = 2; _sum = 0; sumProperties() { for (let i = 0; i < 10_000; i++) this._sum += this._propertyOne + this._propertyTwo; } } new MyClass().sumProperties();