Benchmark: Array.prototype.slice vs Array.from vs Spread with Node List

HTML Preparation code:

<ul>
</ul>

Script Preparation code:

var fooSet = new Set();
var ul = document.querySelector('ul');
for(var i=0;i<100;i++) {
  fooSet.add(i);
  ul.appendChild(document.createElement('li'));
}

var listItems = document.querySelectorAll('li');

Tests:

Array.prototype.slice on NodeList
var other = [].slice.call(fooSet);
Array.prototype.concat on NodeList
var other = [].concat.call([],fooSet);
Array.from on NodeList
var other = Array.from(listItems);
Spread on NodeList
var other = [...listItems];

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.prototype.slice on NodeList
Array.prototype.concat on NodeList
Array.from on NodeList
Spread on NodeList

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/119.0

Browser/OS: Firefox 119 on Windows

View result in a separate tab

Test name	Executions per second
Array.prototype.slice on NodeList	14880080.0 Ops/sec
Array.prototype.concat on NodeList	9067304.0 Ops/sec
Array.from on NodeList	147007.5 Ops/sec
Spread on NodeList	148772.9 Ops/sec

Array.prototype.slice vs Array.from vs Spread with Node List (version: 0)

Comparing performance of: Array.prototype.slice on NodeList vs Array.prototype.concat on NodeList vs Array.from on NodeList vs Spread on NodeList

Created: 3 years ago by: Registered User

Jump to the latest result

Array.prototype.slice on NodeList

Array.prototype.concat on NodeList

Array.from on NodeList

Spread on NodeList

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A