Run results for: Map vs Object

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.80 Safari/537.36 Edg/86.0.622.43

Browser: Chrome 86

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Map lookup	4146.1 Ops/sec
Obj lookup	4314.2 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: