Run results for: Test indexOf vs FindIndex vs include v2

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: 2 months ago

Test name	Executions per second
Index Of	8234211.5 Ops/sec
Find Index	44196.5 Ops/sec
Includes	1028723.4 Ops/sec
Index Of last	292301.7 Ops/sec
Find Index last	3176.2 Ops/sec
Includes last	84089.6 Ops/sec

Script Preparation code:

var bigIdList = new Array(15000);
bigIdList.fill({ id: 0 });
bigIdList = bigIdList.map((el) => el.id = Math.floor(Math.random() * 15000))

var test = 7500
var last = 15000

Tests:

Index Of
bigIdList.indexOf(test) !== -1
Find Index
bigIdList.findIndex((item) => item === test)
Includes
bigIdList.includes(test)
Index Of last
bigIdList.indexOf(last) !== -1
Find Index last
bigIdList.findIndex((item) => item === last)
Includes last
bigIdList.includes(last)

Run results for: Test indexOf vs FindIndex vs include v2

Index Of

Find Index

Includes

Index Of last

Find Index last

Includes last