Run results for: Get object from map in Map, Object and map in WeakMap

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Object	8553419.0 Ops/sec
Map	8156600.0 Ops/sec
Map in WeakMap	7180517.0 Ops/sec
Object in WeakMap	7575181.0 Ops/sec

HTML Preparation code:

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

Script Preparation code:

let o, m, w, owm;
const map = new Map();
const obj = Object.create(null);
const wm  = new WeakMap();
const wm2  = new WeakMap();
const objSet = (ob, k, v)=>{
  ob[k] = v;
  return ob;
};
let data = Object.create(null);
wm.set(data, new Map());
wm2.set(data, Object.create(null));

for (let i = 65; i < 90; i++) {
  let t = String.fromCharCode(i);
  obj[t] = i;
  map.set(t, i);
  wm.set(data, (wm.get(data)).set(t, i));
  wm2.set(data, objSet(wm2.get(data), t, i));
}

Tests:

Object
o = obj['M'];
Map
m = map.get('M');
Map in WeakMap
w = wm.get(data).get('M');
Object in WeakMap
owm = wm2.get(data)['M'];

Run results for: Get object from map in Map, Object and map in WeakMap

Object

Map

Map in WeakMap

Object in WeakMap