prefer-query-selector.md

Prefer .querySelector() over .getElementById(), .querySelectorAll() over .getElementsByClassName() and .getElementsByTagName()

💼 This rule is enabled in the ✅ recommended config.

🔧 This rule is automatically fixable by the --fix CLI option.

It's better to use the same method to query DOM elements. This helps keep consistency and it lends itself to future improvements (e.g. more specific selectors).

Fail

document.getElementById('foo');
document.getElementsByClassName('foo bar');
document.getElementsByTagName('main');
document.getElementsByClassName(fn());

Pass

document.querySelector('#foo');
document.querySelector('.bar');
document.querySelector('main #foo .bar');
document.querySelectorAll('.foo .bar');
document.querySelectorAll('li a');
document.querySelector('li').querySelectorAll('a');