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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:75.0) Gecko/20100101 Firefox/75.0

Browser: Firefox 75

Operating system: Linux

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Splice	5759795.0 Ops/sec
Slice	20450510.0 Ops/sec
Concat	14867310.0 Ops/sec
Spread	22366760.0 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];