React - State Management

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QA

The course is part of this learning path

Introduction to State Management
Overview
Difficulty
Beginner
Duration
23m
Students
229
Ratings
3/5
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Description

This module looks at how to manage state in React. You’ll be looking at state management, context, and reducers.  

Learning Objectives 

The objectives of this module are to provide you with an understanding of: 

  • State Management  
  • Context  
  • How to create and provide context  
  • Reducers  
  • How to provide dispatch 

Intended Audience  

This learning path is aimed at all who wish to learn how to use the ReactJS framework.  

Prerequisites

It is essential you understand the face of contemporary web development to attend this course. We insist upon JavaScript experience, along with good HTML and CSS skills. 

Feedback 

We welcome all feedback and suggestions - please contact us at qa.elearningadmin@qa.com to let us know what you think. 

Transcript

- [Narrator] There's a time, you'll hopefully create your own library throughout components that can be used across a number of different applications. As these applications become more complex, identifying what state you should live can become a difficult job. You must flee complex hierarchical component trees that may have many branches that are many levels deep. Sharing a single source of truth across the branches by passing props for the tree can add a lot of additional code and make the components less easy to understand. The React community has been well aware of this issue and different methodologies to abstract state management have been introduced to work with state and complex component trees. In this section, we'll examine what context is and how the useContext hook can be utilized to help simplify these data drill downs. We'll also examine reducers and how the useReducer hook is leverage to enable components to dispatch actions and payloads to keep state updated. You may have heard of redox as a state management tool commonly used with React, and that's one way to do it. But the one with hooks has introduced much of the functionality into React and that's great news. So we won't be looking into redox here.

Lectures

Context - How to Create and Provide Context - Consume Context - Reducers - Actions in Reducers - The useReducer Hook - Providing Dispatch

About the Author
Avatar
Ed Wright
Senior Learning Consultant
Students
10377
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7
Courses
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Ed is an Outstanding Trainer in Software Development, with a passion for technology and its uses and holding more than 10 years’ experience.

Previous roles have included being a Delivery Manager, Trainer, ICT teacher, and Head of Department. Ed continues to develop existing and new courses, primarily in web design using: PHP, JavaScript, HTML, CSS, SQL, and OOP (Java), Programming Foundations (Python), and DevOps (Git, CI/CD, etc). Ed describes himself as practically minded, a quick learner, and a problem solver who pays great attention to detail. 

Ed’s specialist area is training in Emerging Technologies, within Web Development. Ed mainly delivers courses in JavaScript covering vanilla JS, ES2015+, TypeScript, Angular, and React (the latter is authored by Ed) and has delivered on behalf of Google for PWAs. Ed has also developed a new suite of PHP courses and has extensive experience with HTML/CSS and MySQL. 

Ed is responsible for delivering QA’s Programming Foundations course using the Eclipse IDE. His skillset extends into the DevOps sphere, where he is able to deliver courses based around Agile/Scrum practices, version control, and CI/CD.

Covered Topics