Run results for: Map vs Object

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:75.0) Gecko/20100101 Firefox/75.0

Browser: Firefox 75

Operating system: Mac OS X 10.13

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Map lookup	15558.0 Ops/sec
Obj lookup	33120.8 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: