Benchmark: Get object from map in Map, Object and map in WeakMap

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'];

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object
Map
Map in WeakMap
Object in WeakMap

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

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/OS: Chrome 133 on Windows

View result in a separate tab

Object

8.6M/s

Map

8.2M/s

Object in WeakMap

7.6M/s

Map in WeakMap

7.2M/s

View exact numbers

Test name	Executions per second
✓ Object	8,553,419 Ops/sec
Map	8,156,600 Ops/sec
Object in WeakMap	7,575,181 Ops/sec
Map in WeakMap	7,180,517 Ops/sec

Get object from map in Map, Object and map in WeakMap (version: 1)

Comparing performance of: `Object vs Map vs Map in WeakMap vs Object in WeakMap`

Created: one year ago by: Registered User

Go to the latest result

Object

Map

Map in WeakMap

Object in WeakMap

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Get object from map in Map, Object and map in WeakMap (version: 1)

Comparing performance of: Object vs Map vs Map in WeakMap vs Object in WeakMap

Created: one year ago by: Registered User

Go to the latest result

Object

Map

Map in WeakMap

Object in WeakMap

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Object vs Map vs Map in WeakMap vs Object in WeakMap`