Run results for: optimizing DOM selectors

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:85.0) Gecko/20100101 Firefox/85.0

Browser: Firefox 85

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

HTML Preparation code:

<div id="test"></div>
<div class="test"></div>
<div aria-label="test"></div>

Tests:

getElementById
document.getElementById('test');
querySelector
document.querySelector('#test');
if-else id
var query = '#test'; if (query.startsWith('#')) document.getElementById(query.substring(1)); else document.querySelector(query);
if-else querySelector
var query = '[aria-label]'; if (query.startsWith('#')) document.getElementById(query.substring(1)); else if (query.startsWith('.')) document.getElementsByClassName(query.substring(1)); else document.querySelector(query);