Benchmark: Array splice vs. Set delete

HTML Preparation code:

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Script Preparation code:

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async function globalMeasureThatScriptPrepareFunction() {
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Tests:

Set delete
const arrOrg = new Array(1000).fill(() => 'Nei'); const arr = arrOrg.map(() => () => 'Nei'); const func = () => console.log('Hei!'); const set = new Set([...arr, func]); set.delete(func);
Array splice
const arrOrg = new Array(1000).fill(() => 'Nei'); const arr = arrOrg.map(() => () => 'Nei'); const func = () => console.log('Hei!'); const set = [...arr, func]; const index = set.indexOf(func); set.splice(index, 1);

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

Array splice

86K/s

Set delete

25K/s

Fastest: Array splice (3.4x faster)

View exact numbers

✓ Array splice: 86,069 ops/sec
• Set delete: 25,447 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
Set delete
Array splice

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; rv:128.0) Gecko/20100101 Firefox/128.0

Browser/OS: Firefox 128 on Windows

View result in a separate tab

Array splice

45K/s

Set delete

16K/s

View exact numbers

Test name	Executions per second
✓ Array splice	44,994 Ops/sec
Set delete	16,431 Ops/sec

Array splice vs. Set delete (version: 1)

Comparing performance of: `Set delete vs Array splice`

Created: one year ago by: Guest

Go to the latest result

Set delete

Array splice

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Array splice vs. Set delete (version: 1)

Comparing performance of: Set delete vs Array splice

Created: one year ago by: Guest

Go to the latest result

Set delete

Array splice

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Set delete vs Array splice`