Benchmark: JavaScript array copy methods for() vs spread operator

Tests:

for() method copy
let arr1 = [1,2,3,4,5,6,7,8,9,10]; let arr2 = []; for (let i=0; i<arr1.length; i+=1) {arr2.push(arr1[i]);}
spread operator copy
let arr1 = [1,2,3,4,5,6,7,8,9,10]; let arr2 = [...arr1];

Rendered benchmark preparation results:

Previous results

Test case name	Result
for() method copy
spread operator copy

ⓘ Get performance results from real users on your website with Request Metrics.

Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36

Browser/OS: Chrome 117 on Mac OS X 10.15.7

Test name	Executions per second
for() method copy	61196400.0 Ops/sec
spread operator copy	129020700.0 Ops/sec

JavaScript array copy methods for() vs spread operator (version: 0)