Run results for: Map vs Object GetAndSet largeset

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Map lookup	137.8 Ops/sec
Obj lookup	92.8 Ops/sec

Script Preparation code:

var map = new Map();
var obj = {};

map.set('a', 5);
obj['a'] = 5;

var i = 0, count = 20000, a;

Tests:

Map lookup
let x; for (i = 0; i < count; i++) { map.set('a'+i, i); } for (i = 0; i < count; i++) { x=map.get('a'+i); }
Obj lookup
let y; for (i = 0; i < count; i++) { obj['a'+i]=i; } for (i = 0; i < count; i++) { y=obj['a'+i]; }