Run results for: Map vs Object

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; rv:90.0) Gecko/20100101 Firefox/90.0

Browser: Firefox 90

Operating system: Windows 7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Map lookup	4794.1 Ops/sec
Obj lookup	10557.3 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: