Run results for: Map vs Array vs Object has uint32 get speed

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:49.0) Gecko/20100101 Firefox/49.0

Browser: Firefox 49

Operating system: Windows 7

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
Map	11249490.0 Ops/sec
Array	1092338.0 Ops/sec
Object	1115544.0 Ops/sec

Script Preparation code:

var map = new Map();
var arr = [];
var obj = {};

var randomU32 = function() {
	return Math.random() * (1 << 31) >>> 0;
}

var rand = randomU32();
map.set(rand, rand);
arr[rand] = rand;
obj[rand] = rand;

Tests:

Map
map.get(rand);
Array
arr[rand]
Object
obj[rand]