https://bestvpn.org/html5demos/classlist/
Simple Classlist Manipulation Example - BestVPN.org
simpleclasslistmanipulationexample
https://developer.mozilla.org/en-US/docs/Web/API/Element/classList
Element: classList property - Web APIs | MDN
The read-only classList property of the Element interface contains a live DOMTokenList collection representing the class attribute of the element. This can...
web apiselementclasslistpropertymdn
https://caniuse.com/?search=ciu/classlist
"ciu/classlist" | Can I use... Support tables for HTML5, CSS3, etc
can i usesupport tableshtml5 css3classlistetc