30-seconds-of-code/snippets/addClass.md

title, tags, expertise, author, cover, firstSeen, lastUpdated

title	tags	expertise	author	cover	firstSeen	lastUpdated
Add class to HTML element	browser	beginner	chalarangelo	blog_images/budapest-palace.jpg	2020-12-30T19:21:15+02:00	2020-12-30T19:21:15+02:00

Adds a class to an HTML element.

• Use Element.classList and DOMTokenList.add() to add the specified class to the element.

const addClass = (el, className) => el.classList.add(className);

addClass(document.querySelector('p'), 'special');
// The paragraph will now have the 'special' class