Run results for: Boolean vs !! vs Cast type

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/135.2 Mobile/15E148 Safari/605.1.15

Browser: Mobile Safari 18

Operating system: iOS 18.3.1

Device Platform: Mobile

Date tested: one year ago

Test2

312.3M/s

Test3

309.6M/s

Test1

285.1M/s

View exact numbers

Test name	Executions per second
✓ Test2	312,328,000 Ops/sec
Test3	309,638,272 Ops/sec
Test1	285,106,176 Ops/sec

Script Preparation code:

var newArr = ['1', '2', '3', '4'];

Tests:

Test1
!!newArr.length === true
Test2
Boolean(newArr.length) === true
Test3
newArr.length == true