Run results for: Nj9ZJ^FuK4AJ#wKEww

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.93 Safari/537.36

Browser: Chrome 96

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
iterate on map with values() and filter	218159.7 Ops/sec
iterate on map with forEach() and filter	93641.2 Ops/sec
iterate on array and filter	292395.9 Ops/sec

Script Preparation code:

const data = Array.from(Array(1000).keys());
var map = new Map(data.map((o) => [o, o]));
var array = [...data];

Tests:

iterate on map with values() and filter
const filtered = []; for (const o of map.values()) { if (o%2 === 0) filtered.push(o); }
iterate on map with forEach() and filter
const filtered = []; map.forEach(o => { if (o%2 === 0) filtered.push(o) });
iterate on array and filter
const filtered = array.filter(o => o % 2 === 0);