Run results for: Array.slice vs manual clone

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:98.0) Gecko/20100101 Firefox/98.0

Browser: Firefox 98

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Array.slice	3175.2 Ops/sec
Manual copy	708.1 Ops/sec

Script Preparation code:

var arr=(function(){
	var arr=[];
	for(var i=0; i<80000; i++){
		arr.push(i);
    }
	return arr;
}())

Tests:

Array.slice
var arr2=arr.slice(); return arr2;
Manual copy
var arr3=new Array(arr.length); for(var i=0; i<arr.length; i++){ arr3[i]=arr[i]; } return arr3;