Run results for: Array slice() vs slice(0) vs spread operator

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.1033 YaBrowser/23.9.1.1033 (corp) Yowser/2.5 Safari/537.36

Browser: Yandex Browser 23

Operating system: Linux

Device Platform: Desktop

Date tested: 8 months ago

Test name	Executions per second
Array.prototype.slice()	18749118.0 Ops/sec
spread operator	18201832.0 Ops/sec
Array.prototype.slice(0)	19292234.0 Ops/sec

Script Preparation code:

var baseArray = []
for (var i = 0; i < 50; i++) {
  baseArray.push((Math.floor(Math.random() * Math.floor(1000000))).toString(16)) 
}

Tests:

Array.prototype.slice()
var other = baseArray.slice();
spread operator
var other = [ ...baseArray ]
Array.prototype.slice(0)
var other = baseArray.slice(0);

Run results for: Array slice() vs slice(0) vs spread operator

Compare the new ES6 spread operator with the traditional slice() methods

Array.prototype.slice()

spread operator

Array.prototype.slice(0)