UI Components

The forEach() method of Array instances executes a provided function once for each array element.

MDN: Array.prototype.forEach()

The read-only classList property of the Element interface contains a live DOMTokenList collection representing the class attribute of the element. This can then be used to manipulate the class list.

MDN: Element: classList property

The getAttribute() method of the Element interface returns the value of a specified attribute on the element.

If the given attribute does not exist, the value returned will be null.

Element: getAttribute() method

The setAttribute() method of the Element interface sets the value of an attribute on the specified element. If the attribute already exists, the value is updated; otherwise a new attribute is added with the specified name and value.

Element: setAttribute() method

The HTMLElement property hidden reflects the value of the element's hidden attribute.

HTMLElement: hidden property