Run results for: proxy access vs function vs getter

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.0

Device Platform: Mobile

Date tested: one year ago

baseline property access

8.6M/s

obj with getter

8.3M/s

function access

8.1M/s

proxy access

7.5M/s

View exact numbers

Test name	Executions per second
✓ baseline property access	8,619,830 Ops/sec
obj with getter	8,274,230 Ops/sec
function access	8,116,326 Ops/sec
proxy access	7,516,433 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

function useTest() {
    const obj = {
        a: 'something'
    }
    
    const objWGetter = {
        get a() {
         return obj.a 
        }
    }

    const proxy = new Proxy(obj, {
        get(target, key) {
            return target[key]
        }
    })
    
    function getA() {
        return obj.a
    }
  
    return {
        obj,
      objWGetter,
        proxy,
        getA
    }
}

Tests:

baseline property access
const {obj}=useTest() const a =obj.a
obj with getter
const {objWGetter}=useTest() const a =objWGetter.a
function access
const {getA}=useTest() const a =getA()
proxy access
const {proxy}=useTest() const a =proxy.a