Run results for: spread array performance (vs slice, splice, concat) - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/116.0

Browser: Firefox 116

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Slice

19.7M/s

Concat

17.8M/s

Spread

14.5M/s

Splice

10.2M/s

View exact numbers

Test name	Executions per second
✓ Slice	19,684,794 Ops/sec
Concat	17,787,498 Ops/sec
Spread	14,535,345 Ops/sec
Splice	10,177,071 Ops/sec

Tests:

Splice
const testArray = [1, 2, 3]; const newTestArray = testArray.splice(0);
Slice
const testArray = [1, 2, 3]; const newTestArray = testArray.slice();
Concat
const testArray = [1, 2, 3]; const newTestArray = testArray.concat();
Spread
const testArray = [1, 2, 3]; const newTestArray = [...testArray];