Run results for: ForEach then find index vs ForEach then includes vs ForEach then indexOf v2.2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

ForEach then indexOf

2K/s

ForEach then include

6/s

ForEach then find index

1/s

View exact numbers

Test name	Executions per second
✓ ForEach then indexOf	2,105 Ops/sec
ForEach then include	6 Ops/sec
ForEach then find index	1 Ops/sec

Script Preparation code:

var bigList = new Array(15000);
bigList.fill(0);
bigList = bigList.map((el, idx) => el = idx);

var idList = new Array(15000);
idList.fill(0);
idList = idList.map((el) => el = Math.floor(Math.random() * 15000))

Tests:

ForEach then find index
idList.forEach((itemId) => { bigList.findIndex((bigListItem) => bigListItem === itemId); });
ForEach then include
bigList.forEach((bigListItem, index) => { idList.includes(bigListItem) });
ForEach then indexOf
bigList.forEach((bigListItem, index) => { idList.indexOf(bigListItem) !== -1 });