The ‘Class List’ (HTMLElement.classList property) allows you to powerfully manipulate the classes attached to an HTML Element. You can use it to add, remove, toggle and even replace classes on an element.
In this video we look at a visual example (through the help of CSS) as to how exactly you can use this functionality.
For your reference:
https://developer.mozilla.org/en-US/docs/Web/API/Element/classList
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