The copyWithin() method of arrays and typed arrays shifts or copies items of an array to another index of the array without changing its length.

The fill() method of arrays and typed arrays sets all or some items of an array to a given a value.

The find() and findIndex() methods of arrays and typed arrays search an array for the first item that satisfies a test function.

The Array.of() and typed array .of() static methods create new arrays from the values of any number of arguments.

The includes() method of arrays and typed arrays returns whether a given value appears in the array.

The Array.from() and typed array .from() static methods copy items from an iterable or array-like object to make a new array.