Run results for: arr.slice(-1)[0] vs arr[arr.length - 1]

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.85 Safari/537.36

Browser: Chrome 90

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
arr.slice(-1)[0]	4638082.0 Ops/sec
arr[arr.length - 1]	3265122.0 Ops/sec

Script Preparation code:

var arr = Array(100000).fill(1);

Tests: