Run results for: Array.from vs Spread vs Slice with Node List

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0

Browser: Firefox 115

Operating system: Windows 8.1

Device Platform: Desktop

Date tested: 2 months ago

Test name	Executions per second
Array.from	390618.0 Ops/sec
Spread	394333.6 Ops/sec
Array.from on NodeList	111663.5 Ops/sec
Spread on NodeList	111740.0 Ops/sec
Slice	481917.4 Ops/sec

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

Run results for: Array.from vs Spread vs Slice with Node List

Array.from

Spread

Array.from on NodeList

Spread on NodeList

Slice