Benchmark: Remove by splice + findIndex vs filter

HTML Preparation code:

<script>
  var array = 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</script>

Script Preparation code:

/* these functions assume that only one element matches, so they do not loop! */

function deleteBySplice (array, name) {
  var index = array.findIndex(element => element.name = name);
  if (index !== -1) {
  	array.splice( index, 1 );
  }
}

function deleteByFilter (array, name) {
  array = array.filter(element => element !== name);
}

Tests:

Delete by Splice
deleteBySplice( array, "7d9nkqdcq9c65jhwdfp5fp3nmi" ); deleteBySplice( array, "m1c6kzws0iubt8g0zlsug14i" ); deleteBySplice( array, "est573afhw1cg83xlxe6ogvi" ); deleteBySplice( array, "doesnotexist" );
Delete by Filter
deleteByFilter( array, "7d9nkqdcq9c65jhwdfp5fp3nmi" ); deleteByFilter( array, "m1c6kzws0iubt8g0zlsug14i" ); deleteByFilter( array, "est573afhw1cg83xlxe6ogvi" ); deleteByFilter( array, "doesnotexist" );

Historical Performance Data aggregated from 15 community runs

Desktop Results:

Chrome 15 runs

Delete by Splice

2.1M/s

Delete by Filter

2.0M/s

View exact numbers

✓ Delete by Splice: 2,077,384 ops/sec
• Delete by Filter: 2,037,964 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Delete by Splice
Delete by Filter

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser/OS: Chrome 133 on Mac OS X 10.15.7

View result in a separate tab

Delete by Splice

103.1M/s

Delete by Filter

52.3M/s

View exact numbers

Test name	Executions per second
✓ Delete by Splice	103,088,392 Ops/sec
Delete by Filter	52,338,712 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Remove by splice + findIndex vs filter (version: 0)

Deletion of an element from an array.

Comparing performance of: `Delete by Splice vs Delete by Filter`

Created: 5 years ago by: Guest

Go to the latest result

Delete by Splice

Delete by Filter

Historical Performance Data aggregated from 15 community runs

Desktop Results:

Chrome 15 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

Remove by splice + findIndex vs filter (version: 0)

Deletion of an element from an array.

Comparing performance of: Delete by Splice vs Delete by Filter

Created: 5 years ago by: Guest

Go to the latest result

Delete by Splice

Delete by Filter

Historical Performance Data aggregated from 15 community runs

Desktop Results:

Chrome 15 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

Related benchmarks

Comparing performance of: `Delete by Splice vs Delete by Filter`