Benchmark: Remove element from array splice vs copyWithin

Script Preparation code:

var array1 = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99]
var array2 = array1.slice();

function deleteBySplice (array,index) {
  array.splice( index, 1 );
}

function deleteByCopyWithin (array, index) {
  array.copyWithin( index, index + 1 );
  array.pop();
}

Tests:

deleteBySplice
for (let i = array1.length; i >= 0; i-=3) { deleteBySplice(array1, i); }
deleteByCopyWithin
for (let i = array2.length; i >= 0; i-=3) { deleteByCopyWithin(array2, i); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
deleteBySplice
deleteByCopyWithin

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36

Browser/OS: Chrome 107 on Windows

View result in a separate tab

Test name	Executions per second
deleteBySplice	3191294.0 Ops/sec
deleteByCopyWithin	3394604.0 Ops/sec

Remove element from array splice vs copyWithin (version: 0)

Comparing performance of: deleteBySplice vs deleteByCopyWithin

Created: one year ago by: Guest

Jump to the latest result

deleteBySplice

deleteByCopyWithin

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A