Run results for: at(-1) vs (length - 1)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 YaBrowser/23.11.0.0 Safari/537.36

Browser: Yandex Browser 23

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

at(-1)

12.0M/s

length - 1

6.3M/s

View exact numbers

Test name	Executions per second
✓ at(-1)	12,009,117 Ops/sec
length - 1	6,324,279 Ops/sec

Script Preparation code:

var array = [];

for(var i = 0; i < 100000; i++){array.push(Math.random());}

Tests: