Run results for: .at vs length -1

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0

Browser: Firefox 139

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

array[array.length - 1]

2037.3M/s

array.at(-1)

1180.8M/s

View exact numbers

Test name	Executions per second
✓ array[array.length - 1]	2,037,327,616 Ops/sec
array.at(-1)	1,180,755,712 Ops/sec

Script Preparation code:

var array = Array.from({length: 100}).map(Math.random);

Tests: