Run results for: Map vs Object hasOwnProperty

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:133.0) Gecko/20100101 Firefox/133.0

Browser: Firefox 133

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Obj lookup

469K/s

Map lookup

413K/s

View exact numbers

Test name	Executions per second
✓ Obj lookup	468,693 Ops/sec
Map lookup	413,361 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: