Built-in components

The framework also provides us with several built-in components that we can use without explicitly importing them into each SFC. I have provided here a small description of each one, so you can refer to the official documentation for the syntax and examples (see https://vuejs.org/api/built-in-components.html):

• Transition and TransitionGroup are two components that can work together to provide animations and transition to elements and components. They need you to create the CSS animations and transition classes to implement the animation when inserting or removing elements into the page. They are mainly (or often) used when you are displaying a list of elements with v-for/:key or v-if/v-show directives.
• KeepAlive is another wrapper component (meaning that it surrounds other components) used to preserve the state (internal variables, elements, etc.) when the component wrapped inside is no longer on display. Usually, component instances are cleared out...