Benchmark: JavaScript spread operator vs Array.concat performance

Tests:

Using spread operator
const array1 = [1, 2, 3, 4, 5] const array2 = [6, 7, 8, 9, 10] const finalArray = [ ...array1, ...array2 ]
Using Array.concat
const array1 = [1, 2, 3, 4, 5] const array2 = [6, 7, 8, 9, 10] const finalArray = array1.concat(array2)

Rendered benchmark preparation results:

Previous results

Test case name	Result
Using spread operator
Using Array.concat

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Mobile/15E148 Safari/604.1

Browser/OS: Mobile Safari 15 on iOS 15.4

Test name	Executions per second
Using spread operator	324855100.0 Ops/sec
Using Array.concat	13762200.0 Ops/sec

JavaScript spread operator vs Array.concat performance (version: 0)