Run results for: Array.prototype.concat vs spread operator vs push

Run details:

User agent: Mozilla/5.0 (Linux; Android 9; Pixel Build/PPR1.180610.009) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.91 Mobile Safari/537.36

Browser: Chrome Mobile 68

Operating system: Android

Device Platform: Mobile

Date tested: 6 years ago

Test name	Executions per second
Array.prototype.concat	2476594.0 Ops/sec
spread operator	8627377.0 Ops/sec
Push	18241720.0 Ops/sec

Tests:

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

Run results for: Array.prototype.concat vs spread operator vs push

Compare the new ES6 spread operator with the traditional concat() method and push

Array.prototype.concat

spread operator

Push