Are hover states necessary?

The short answer is, yes, we need to have hover states on every button in our interface. And I typically extend that to anything clickable (list-box items, links (although that comes for free), and any other custom elements like whiteboard nodes or table cells).

1. What is the purpose of a hover state?
2. Can hover and focus states be the same?
3. What is a focus state in design?
4. What are UI states?

What is the purpose of a hover state?

As in the button example above, the hover state gives us feedback that we can interact with that element. By putting your cursor over the button with the mouse, the state is hover. Although we can predict the clickability of the buttons, some users cannot gain this habit.

Can hover and focus states be the same?

Focus states cannot be the same as the hover states. However the hover state should be included with the focus styles. Be aware of the thickness of lines used for a focus state.

What is a focus state in design?

A focused state communicates when a user has highlighted an element using a keyboard or voice. Focus states apply to all interactive components. They should receive high emphasis, as they are not indicated by other visual cues.

What are UI states?

We humans have different reactions to situations we are being faced with at any particular time so does a digital product and this reaction to user interactions is called U.I states. Depending on the context, these states are revealed to the user.