Run results for: Clone and append to array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser: Chrome 126

Operating system: Windows

Device Platform: Desktop

Date tested: 4 months ago

Test name	Executions per second
Array.prototype.toSpliced	7445254.0 Ops/sec
Spread operator	12354495.0 Ops/sec
Array.prototype.slice + Array.prototype.push	12673347.0 Ops/sec

Script Preparation code:

var array = ["hello", true, 7];
var newElement = "new";

Tests:

Array.prototype.toSpliced
const newArray = array.toSpliced(array.length, 0, newElement);
Spread operator
const newArray = [...array, newElement];
Array.prototype.slice + Array.prototype.push
const newArray = array.slice(); newArray.push(newElement);