Run results for: NodeList vs Array iterator 3

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36

Browser: Chrome 113

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
nodeList	27657.0 Ops/sec
array	53381.4 Ops/sec
created array	27778.4 Ops/sec
spread array	27763.3 Ops/sec

HTML Preparation code:

<ul>
</ul>

Script Preparation code:

var ul = document.querySelector('ul');
for(var i=0;i<100;i++) {
  ul.appendChild(document.createElement('li'));
}

var nodeList = document.querySelectorAll('li');
var array = Array.from(nodeList);

Tests:

nodeList
for (const i of nodeList) { i.classList.add("hi"); }
array
for (const i of array) { i.classList.add("hi"); }
created array
let a2 = Array.from(nodeList); for (const i of a2) { i.classList.add("hi"); }
spread array
let a3 = [...nodeList]; for (const i of a3) { i.classList.add("hi"); }

Run results for: NodeList vs Array iterator 3

nodeList

array

created array

spread array