Run results for: Map vs Object

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36

Browser: Chrome 85

Operating system: Windows 8.1

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Map lookup	3512.5 Ops/sec
Obj lookup	3705.3 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: