Benchmark: Remove by splice vs copyWithin 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, element) {
  var index = array.indexOf( element );
  if (index !== -1) {
  	array.splice( index, 1 );
  }
}

function deleteByCopyWithin (array, element) {
  var index = array.indexOf( element );
  if (index !== -1) {
  	array.copyWithin( index, index + 1 );
    --array.length;
  }
}

function deleteByFilter (array, element) {
  array = array.filter( el => el !== element );
}

Tests:

Delete by Splice
deleteBySplice( array, "uyjxmtqnrzvj7mkyqmtoqolxr" ); deleteBySplice( array, "m1c6kzws0iubt8g0zlsug14i" ); deleteBySplice( array, "4wlivut0n1ht80rs5lyf7ds4i" );
Delete by copyWithin
deleteByCopyWithin( array, "uyjxmtqnrzvj7mkyqmtoqolxr" ); deleteByCopyWithin( array, "m1c6kzws0iubt8g0zlsug14i" ); deleteByCopyWithin( array, "4wlivut0n1ht80rs5lyf7ds4i" );
Delete by Filter
deleteByFilter( array, "uyjxmtqnrzvj7mkyqmtoqolxr" ); deleteByFilter( array, "m1c6kzws0iubt8g0zlsug14i" ); deleteByFilter( array, "4wlivut0n1ht80rs5lyf7ds4i" );

Historical Performance Data aggregated from 117 community runs

Desktop Results:

Chrome 90 runs

Delete by Splice

1.0M/s

Delete by copyWithin

984K/s

Delete by Filter

374K/s

Fastest: Delete by Splice (2.7x faster)

View exact numbers

✓ Delete by Splice: 1,001,151 ops/sec
• Delete by copyWithin: 983,796 ops/sec
• Delete by Filter: 374,498 ops/sec

Firefox 20 runs

Delete by copyWithin

659K/s

Delete by Splice

651K/s

Delete by Filter

126K/s

Fastest: Delete by copyWithin (5.2x faster)

View exact numbers

✓ Delete by copyWithin: 658,528 ops/sec
• Delete by Splice: 650,997 ops/sec
• Delete by Filter: 126,087 ops/sec

Mobile Results:

Chrome 7 runs

Delete by copyWithin

545K/s

Delete by Splice

533K/s

Delete by Filter

117K/s

Fastest: Delete by copyWithin (4.6x faster)

View exact numbers

✓ Delete by copyWithin: 545,286 ops/sec
• Delete by Splice: 532,590 ops/sec
• Delete by Filter: 117,398 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 copyWithin
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 (iPhone; CPU iPhone OS 18_3_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3.1 Mobile/15E148 Safari/604.1

Browser/OS: Mobile Safari 18 on iOS 18.3.2

View result in a separate tab

Delete by Splice

1.0M/s

Delete by copyWithin

1.0M/s

Delete by Filter

358K/s

View exact numbers

Test name	Executions per second
✓ Delete by Splice	1,038,770 Ops/sec
Delete by copyWithin	1,011,795 Ops/sec
Delete by Filter	357,995 Ops/sec

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

LLMs can make mistakes. Check important info.

It seems like you're providing a large amount of text data, likely related to benchmarking results for some JavaScript array deletion methods (e.g., `deleteBySplice`, `deleteByCopyWithin`, and `deleteByFilter`). However, I'll focus on extracting relevant information from this data.

Here are the main findings:

1. **Benchmark Results**: The latest benchmark result shows that Firefox 131 performs:
	* Best execution rate: Delete by copyWithin (~792 executions per second)
	* Average execution rates: 
		+ Delete by Splice (~774 executions per second)
		+ Delete by Filter (~238 executions per second)
2. **Browser and Device**: The benchmark was conducted on a Windows desktop with Firefox 131.
3. **Testing Variations**: There are three test cases for each deletion method, indicating that the results might be slightly different depending on the specific array being tested.

To answer your question directly: Firefox 131 performs best when using the `deleteByCopyWithin` method, followed by `deleteBySplice`, and then `deleteByFilter`.

Remove by splice vs copyWithin vs filter (version: 0)

Deletion of an element from an array.

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

Created: 9 years ago by: Guest

Go to the latest result

Delete by Splice

Delete by copyWithin

Delete by Filter

Historical Performance Data aggregated from 117 community runs

Desktop Results:

Chrome 90 runs

Firefox 20 runs

Mobile Results:

Chrome 7 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 vs copyWithin vs filter (version: 0)

Deletion of an element from an array.

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

Created: 9 years ago by: Guest

Go to the latest result

Delete by Splice

Delete by copyWithin

Delete by Filter

Historical Performance Data aggregated from 117 community runs

Desktop Results:

Chrome 90 runs

Firefox 20 runs

Mobile Results:

Chrome 7 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 copyWithin vs Delete by Filter`