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

Ways to get the last item in an array

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Chrome 131
Windows
Desktop
4 months ago
Test name Executions per second
`array.slice(-1)[0]` 5970629.5 Ops/sec
`array[array.length-1]` 3631181.8 Ops/sec
Script Preparation code:
AخA
 
var arr = Array.from(Array(100).keys());
Tests:

  • `array.slice(-1)[0]`

     
    arr.slice(-1);

  • `array[array.length-1]`

     
    arr[arr.length-1];