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

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:103.0) Gecko/20100101 Firefox/103.0

Browser: Firefox 103

Operating system: Ubuntu

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
arr.slice(-1)[0]	30375700.0 Ops/sec
arr[arr.length - 1]	1867866000.0 Ops/sec

Script Preparation code:

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

Tests: