Run results for: JS Spread operator vs push

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Spread operator

40.0M/s

Push with spread operator

30.9M/s

Push with simple for

18.4M/s

View exact numbers

Script Preparation code:

var foo = [ 2, 5, 7 ];
var bar = [ 3, 4, 6 ];

Tests:

Spread operator
var result = [ ...foo, ...bar ];
Push with spread operator
var result = []; result.push(...foo); result.push(...bar);
Push with simple for
var result = []; for (var i = 0; i < foo.length; i++){ result.push(foo[i]); } for (var j = 0; j < foo.length; j++){ result.push(bar[j]); }