Run results for: Map vs Object

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 12_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 12

Operating system: iOS 12.1

Device Platform: Mobile

Date tested: 5 years ago

Test name	Executions per second
Map lookup	4848.0 Ops/sec
Obj lookup	3623.3 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: