Run results for: Map.prototype.forEach vs Array.prototype.forEach

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Map.prototype.forEach	3.9 Ops/sec
Array.prototype.forEach	4.5 Ops/sec

Script Preparation code:

var arr = [];
var map = new Map();

for (let i=0; i<100000; i++) {
  arr.push(i);
  map.set(i, i);
}

Tests: