Run results for: Map vs Array vs Object set uint32 key speed

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; rv:67.0) Gecko/20100101 Firefox/67.0

Browser: Firefox 67

Operating system: Windows 7

Device Platform: Desktop

Date tested: 4 years ago

Script Preparation code:

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

Tests: