Redux

Getting Started

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Learning Objectives

React-Redux
Redux Toolkit
Redux DevTools

Description

Redux is a popular global state management library that is used in mid-sized to large applications.

We'll be looking into redux, the redux store and redux-toolkit. the modern way to build applications with react-redux.

Acceptance Criteria

Create a counter using redux

Rubric

Task	Points
Show effort	10

Terminology

Action : A regular javascript object that has a required type property and an optional payload

//the type of action will always be a string the payload can be anything
const action1 = {type: String, payload: {name: 'Vonta', age: 30}};
const action2 = {type: String, payload: [1, 2, 3]};
const action3 = {type: String, payload: 9};
const action4 = {type: String, payload: true};
const action5 = {type: String, payload: 'Nice Day out!'};

Reducer : A reducer is a function that receives the current state and an action object, decides how to update the state if necessary, and returns the new state: (state, action) => newState

Store : The current Redux application state lives in an object called the store

Dispatch : he only way to update the state is to call dispatch() and pass in an action object

Selector : Selectors are functions that know how to extract specific pieces of information from a store state value. As an application grows bigger, this can help avoid repeating logic as different parts of the app need to read the same data