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

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:127.0) Gecko/20100101 Firefox/127.0

Browser: Firefox 127

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 2 years ago

Slice

57.9M/s

Concat

39.4M/s

Spread

33.7M/s

Splice

26.9M/s

View exact numbers

Test name	Executions per second
✓ Slice	57,945,020 Ops/sec
Concat	39,353,076 Ops/sec
Spread	33,721,620 Ops/sec
Splice	26,865,724 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];