Run results for: array[array.length - 1] vs array.at(-1)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:132.0) Gecko/20100101 Firefox/132.0

Browser: Firefox 132

Operating system: Windows

Device Platform: Desktop

Date tested: 5 months ago

Test name	Executions per second
array[array.length - 1]	2037019648.0 Ops/sec
array.at(-1)	1106915328.0 Ops/sec

Script Preparation code:

var array = [1,2,3];

AخA
 
var array = [1,2,3];

Tests:

array[array.length - 1]
var d = array[array.length - 1];
var d = array[array.length - 1];
array.at(-1)
var z = array.at(-1);
var z = array.at(-1);