Run results for: Test-BC

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4029.3 Safari/537.36

Browser: Chrome 81

Operating system: Mac OS X 10.15.2

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Filter-Map	1748528.5 Ops/sec
Reduce-Push	2812751.8 Ops/sec
Reduce-Concat	82864.7 Ops/sec
Reduce-Spread	458482.7 Ops/sec
ForOf-Push	2192616.0 Ops/sec

Script Preparation code:

var array = [{ name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }, { name: 'Me', id: 1 }, { name: 'You', id: 2 }, { name: 'Us', id: 3 }];

Tests:

Filter-Map
const ids = array .filter(item => item.name === 'Me') .map(item => item.id);
Reduce-Push
const ids = array .reduce((ids, item) => { if (item.name === 'Me') { ids.push(item.id); } return ids; }, []);
Reduce-Concat
const ids = array .reduce((ids, item) => { if (item.name === 'Me') { return ids.concat(item.id); } return ids; }, []);
Reduce-Spread
const ids = array .reduce((ids, item) => { if (item.name === 'Me') { return [...ids,item.id]; } return ids; }, []);
ForOf-Push
const ids = []; for (const item of array) { if (item.name === 'Me') { ids.push(item.id); } }

Filter-Map

Reduce-Push

Reduce-Concat

Reduce-Spread

ForOf-Push