Run results for: spread vs concat for adding new value to array

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

concat

4K/s

spread

4K/s

View exact numbers

Test name	Executions per second
✓ concat	3,968 Ops/sec
spread	3,924 Ops/sec

Tests:

spread
const array1 = Array.from({length: 5000}, (v, i) => i) const newArray = [...array1, 'newvalue']
concat
const array1 = Array.from({length: 5000}, (v, i) => i) const newArray = array1.concat(['newvalue'])