Benchmark: new array creation benchmark

Script Preparation code:

const data = [1, 2, 3, 4, 5];

Tests:

new Array
for (let i = 0; i < 100; ++i) { let result = new Array(...data); }
new Array.push
for (let i = 0; i < 100; ++i) { let result = new Array(); result.push(...data); }
[...]
for (let i = 0; i < 100; ++i) { let result = [...data]; }
[].push()
for (let i = 0; i < 100; ++i) { let result = []; result.push(...data); }
slice()
for (let i = 0; i < 100; ++i) { let result = data.slice(); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
new Array
new Array.push
[...]
[].push()
slice()

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36 Edg/147.0.0.0

Browser/OS: Chrome 147 on Windows

View result in a separate tab

slice()

3.1M/s

[...]

1.7M/s

[].push()

427K/s

new Array.push

361K/s

new Array

214K/s

View exact numbers

Test name	Executions per second
✓ slice()	3,065,255 Ops/sec
[...]	1,690,861 Ops/sec
[].push()	426,862 Ops/sec
new Array.push	361,096 Ops/sec
new Array	214,298 Ops/sec

new array creation benchmark (version: 2)

Comparing performance of: `new Array vs new Array.push vs [...] vs [].push() vs slice()`

Created: 3 months ago by: Registered User

Go to the latest result

new Array

new Array.push

[...]

[].push()

slice()

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

new array creation benchmark (version: 2)

Comparing performance of: new Array vs new Array.push vs [...] vs [].push() vs slice()

Created: 3 months ago by: Registered User

Go to the latest result

new Array

new Array.push

[...]

[].push()

slice()

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `new Array vs new Array.push vs [...] vs [].push() vs slice()`