Run results for: Map vs Map vs Foreach vs for

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.1.1 Safari/605.1.15

Browser: Safari 12

Operating system: Mac OS X 10.14.5

Device Platform: Desktop

Date tested: 4 years ago

Script Preparation code:

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

Tests: