Run results for: Map vs Map vs Foreach vs for

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.75 Safari/537.36

Browser: Chrome 68

Operating system: Mac OS X 10.13.6

Device Platform: Desktop

Date tested: 5 years ago

Script Preparation code:

var a = new Array(1000);
for (let i = 0; i < a.length; i++) {
  a[i] = {};
}

Tests: