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

Run details:

User agent: Mozilla/5.0 (Linux; Android 6.0.1; ONE E1003) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.136 Mobile Safari/537.36

Browser: Chrome Mobile 79

Operating system: Android 6.0.1

Device Platform: Mobile

Date tested: 4 years ago

Test name	Executions per second
Splice	2942009.0 Ops/sec
Slice	14761860.0 Ops/sec
Concat	796038.9 Ops/sec
Spread	8467890.0 Ops/sec

Website performance monitoring

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];