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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:123.0) Gecko/20100101 Firefox/123.0

Browser: Firefox 123

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 months ago

Test name	Executions per second
arr.slice(-1)[0]	41266820.0 Ops/sec
arr[arr.length - 1]	849750800.0 Ops/sec

Script Preparation code:

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

Tests: