Run results for: NodeList loop iterator comparison v2

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:131.0) Gecko/20100101 Firefox/131.0

Browser: Firefox 131

Operating system: Ubuntu

Device Platform: Desktop

Date tested: one year ago

NodeList.forEach

97.3M/s

for ... of

56.2M/s

Array.from

22.3M/s

View exact numbers

Test name	Executions per second
✓ NodeList.forEach	97,272,792 Ops/sec
for ... of	56,175,100 Ops/sec
Array.from	22,263,000 Ops/sec

HTML Preparation code:

<ul>
</ul>

<ol>
</ol>

Script Preparation code:

const ul = document.querySelector('ul');
const ol = document.querySelector('ul');
for (let i = 0; i < 1000; i++) {
    const li = document.createElement('li')
    li.classList.add(i % 2 === 0 ? 'even' : 'odd')
    ul.appendChild(document.createElement('li'));
    ol.appendChild(document.createElement('li'));
}

var oddListItems = document.querySelectorAll('li.odd');

var anything = [];

Tests:

for ... of
for (const item of oddListItems) { anything.push(item); }
Array.from
Array.from(oddListItems).forEach(item => anything.push(item));
NodeList.forEach
oddListItems.forEach(item => anything.push(item));