When building Vue applications, we often switch between different components like tabs, multi-step forms, dynamic components, or event different views inside the same page.
By default, when Vue removes a component from the DOM, its component instance is also unmounted. When you render it again, Vue creates a completely new instance.
This means that things like local state, form input, or component state can be lost.
This is where <KeepAlive> becomes incredibly useful. Vue's KeepAlive component allows you to cache inactive component instances instead of destroying them.
In this article, we'll explore:
