Run results for: Map vs Object

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.1 Safari/605.1.15

Browser: Safari 12

Operating system: Mac OS X 10.14.4

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Map lookup	3404.2 Ops/sec
Obj lookup	3484.7 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: