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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.9) Gecko/20100101 Goanna/4.6 Firefox/68.9 Basilisk/20200805

Browser: Firefox 68

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Splice	3114848.0 Ops/sec
Slice	12063900.0 Ops/sec
Concat	15061660.0 Ops/sec
Spread	2161603.0 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];