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

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 122

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Slice

5.6M/s

Concat

4.1M/s

Spread

3.8M/s

Splice

2.6M/s

View exact numbers

Test name	Executions per second
✓ Slice	5,623,164 Ops/sec
Concat	4,054,512 Ops/sec
Spread	3,764,732 Ops/sec
Splice	2,641,139 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];