Run results for: array from vs slice

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

array clone with type check

12.5M/s

array from basic array

8.7M/s

slice basic array

7.4M/s

typed array clone with type check

247K/s

array from typed array

247K/s

slice typed array

172K/s

View exact numbers

Test name	Executions per second
✓ array clone with type check	12,487,912 Ops/sec
array from basic array	8,667,400 Ops/sec
slice basic array	7,386,125 Ops/sec
typed array clone with type check	246,602 Ops/sec
array from typed array	246,555 Ops/sec
slice typed array	172,028 Ops/sec

HTML Preparation code:

<div></div>

Script Preparation code:

const array = [1, 5, 2, 3, 4, 5, 6, 6, 3, 5, 2, 3, 5, 6, 3, 5, 6, 7]
const typedArray = new Float32Array(array);

Tests:

slice typed array
[].slice.call(typedArray);
array from typed array
Array.from(typedArray);
slice basic array
[].slice.call(array);
array from basic array
Array.from(array);
typed array clone with type check
Array.isArray(typedArray) ? typedArray.slice() : Array.from(typedArray)
array clone with type check
Array.isArray(array) ? array.slice() : Array.from(array)