Run results for: Array.prototype.concat vs spread operator on small array

Run details:

User agent: Mozilla/5.0 (Linux; Android 12; DCO-LX9; HMSCore 6.12.2.302) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.88 HuaweiBrowser/14.0.2.311 Mobile Safari/537.36

Browser: Chrome 99

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Array.prototype.concat	2397900.0 Ops/sec
spread operator	2793188.2 Ops/sec

Script Preparation code:

var array = new Array(10).fill(1)
var toConcat = new Array(10).fill(2)

Tests:

Array.prototype.concat
var other = array.concat(toConcat);
spread operator
var other = [ ...array, ...toConcat ]

Run results for: Array.prototype.concat vs spread operator on small array

Compare the new ES6 spread operator with the traditional concat() method on small array

Array.prototype.concat

spread operator