Run results for: javascript concat vs 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/138.0.0.0 Safari/537.36

Browser: Chrome 138

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

push

79.0M/s

spread operator

47.6M/s

concat

23.1M/s

View exact numbers

Tests:

concat
var existed = [ 1, 2, 3 ]; var params = [ "hello", true, 7 ]; var other = existed.concat(params);
spread operator
var existed = [ 1, 2, 3 ]; var params = [ "hello", true, 7 ]; var other = [ ...existed, ...params ];
push
var existed = [ 1, 2, 3 ]; var params = [ "hello", true, 7 ]; var other = existed.push(...params);