Run results for: for vs for..of vs NodeList.forEach vs Array.forEach vs jQuery.each

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36 Edg/126.0.0.0

Browser: Chrome 126

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

NodeList.forEach

146/s

for

145/s

jQuery.each

140/s

for..of

136/s

Array.forEach

128/s

View exact numbers

Test name	Executions per second
✓ NodeList.forEach	146 Ops/sec
for	145 Ops/sec
jQuery.each	140 Ops/sec
for..of	136 Ops/sec
Array.forEach	128 Ops/sec

HTML Preparation code:

<content id="demo">Hello World!</content>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>

Script Preparation code:

let content = '';
for (let i=0; i<10000; i+=1) {
    content += '<div class="component" data-component="component' + i + '">Content ' + i + '</div>';
}
document.getElementById("demo").innerHTML = content;

Tests:

for
let components = []; let values = []; const queryComponentsFor = document.querySelectorAll('[data-component]'); for (let i = 0; i < queryComponentsFor.length; ++i) { values.push(queryComponentsFor[i].getAttribute('data-component')); components.push(queryComponentsFor[i]); }
for..of
let components = []; let values = []; for (let el of document.querySelectorAll('[data-component]')) { values.push(el.getAttribute('data-component')); components.push(el); }
NodeList.forEach
let components = []; let values = []; document.querySelectorAll('[data-component]').forEach(el => { values.push(el.getAttribute('data-component')); components.push(el); });
Array.forEach
let components = []; let values = []; [...document.querySelectorAll('[data-component]')].forEach(el => { values.push(el.getAttribute('data-component')); components.push(el); });
jQuery.each
let components = []; let values = []; $('[data-component]').each((i, el) => { values.push(el.getAttribute('data-component')); components.push(el); });