The DOMRectList interface represents a collection of DOMRect objects, typically used to hold the rectangles associated with a particular element, like bounding boxes returned by methods such as getClientRects(). It provides access to each rectangle in the list via its index, along with a length property that indicates the total number of rectangles in the list.
Note: DOMRectList exists for compatibility with legacy Web content and is not recommended to be used when creating new APIs.
DOMRectList.length Read onlyA read-only property that returns the total number of DOMRect objects in the DOMRectList.
DOMRectList.itemReturns the DOMRect object at the specified index. If the index is out of range, it returns null.