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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:90.0) Gecko/20100101 Firefox/90.0

Browser: Firefox 90

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Splice	7749551.0 Ops/sec
Slice	19614880.0 Ops/sec
Concat	11454670.0 Ops/sec
Spread	15564320.0 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];