Run results for: Test qwe qweqw

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36

Browser: Chrome 91

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Test case 1	38689.8 Ops/sec
Test case 2	55401.1 Ops/sec

Script Preparation code:

function makeid() {
  var text = "";
  var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

  for (var i = 0; i < 5; i++)
    text += possible.charAt(Math.floor(Math.random() * possible.length));

  return text;
}

window.parentObj = {};

for (let i = 0; i < 100; i++) {
	window.parentObj[makeid()] = new Array(makeid().length).fill(1);
}

Tests:

Test case 1
const newArr = []; Object.keys(window.parentObj).forEach((k, i) => { window.parentObj[k].forEach(value => newArr.push(value)) });
Test case 2
const newArr = []; Object.values(window.parentObj).forEach((values, i) => { values.forEach(value => newArr.push(value)) });

Run results for: Test qwe qweqw

Test

Test case 1

Test case 2