Run results for: Map vs Object hasOwnProperty

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Obj lookup

13K/s

Map lookup

13K/s

View exact numbers

Test name	Executions per second
✓ Obj lookup	13,198 Ops/sec
Map lookup	12,978 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: