Run results for: frozen and normal object

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 125

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

frozen

81/s

normal

79/s

View exact numbers

Test name	Executions per second
✓ frozen	81 Ops/sec
normal	79 Ops/sec

Script Preparation code:

const baseObj = Object.fromEntries(Array.from({ length: 1000 }, () => Math.random().toString(16).slice(2)).map((elem, i) => [i.toString(), elem]))

var obj = Object.assign({}, baseObj);
var frozen = Object.freeze(Object.assign({}, baseObj));

function getElem(obbj, elem) {
  return obbj[elem];
};

Tests:

frozen
for (let i = 0; i < 100000; i++) { getElem(frozen, (i % 10).toString()) }
normal
for (let i = 0; i < 100000; i++) { getElem(obj, (i % 10).toString()) }