Run results for: Map vs Object

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Browser: Firefox 130

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Obj lookup

71K/s

Map lookup

55K/s

View exact numbers

Test name	Executions per second
✓ Obj lookup	70,952 Ops/sec
Map lookup	55,204 Ops/sec

Script Preparation code:

var map = new Map();
var obj = {};

map.set('a', 5);
obj['a'] = 5;

var i = 0, count = 1000, a;

Tests: