What is state management tool in React?

A state management tool is a library or a set of libraries for creating user interfaces in javascript applications . In a nutshell, it implements a View in MVC pattern with all the behaviors and events supported. It’s a tool that permits any developer to create dynamic but at the same time adaptable web applications.

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What is NgRx app State?

You can think of ngrx as a client-side messaging system. The user clicks a button, and the app sends a message (for example, dispatches an action). The app state changed because of this button click, and the ngrx Store sends a message to the subscriber(s), emitting the next value into an observable stream .

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