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/104.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 104

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Spread

6.9M/s

Concat

5.8M/s

Slice

5.2M/s

Splice

4.4M/s

View exact numbers

Test name	Executions per second
✓ Spread	6,881,376 Ops/sec
Concat	5,809,664 Ops/sec
Slice	5,193,731 Ops/sec
Splice	4,447,439 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];