Run results for: Remove by splice vs filter with a known index

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:145.0) Gecko/20100101 Firefox/145.0

Browser: Firefox 145

Operating system: Windows

Device Platform: Desktop

Date tested: 6 months ago

Test name	Executions per second
Delete by Splice	449410.1 Ops/sec
Delete by Filter	323953.5 Ops/sec

HTML Preparation code:

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</script>

Script Preparation code:

function deleteBySplice (array, index) {
  const newArray = [...array];
  newArray.splice(index, 1);
  return newArray;
}

function deleteByFilter (array, index) {
  return array.filter((el, i) => i !== index);
}

Tests:

Delete by Splice
deleteBySplice(array, 1); deleteBySplice(array, 100); deleteBySplice(array, 200);
Delete by Filter
deleteByFilter(array, 1); deleteByFilter(array, 100); deleteByFilter(array, 200);

Run results for: Remove by splice vs filter with a known index

Deletion of an element from an array with a known index.

Delete by Splice

Delete by Filter