Gain insights into React Hooks for frontend development. Learn about components, state management, performance optimization with useMemo, context updates with useContext, and creating custom hooks. Explore application logic mastery.

Packt MBE - Designing React Hooks the right way.png

Web development has changed significantly in recent years. A web developer should not only know the basics of HTML, CSS, and JavaScript but also be proficient in frameworks such as Angular, React, and Vue. These frameworks make web development easier, enabling developers to focus on the application logic.

This course is designed for newcomers to React and experienced React developers alike. You’ll start by learning the most fundamental concept in React—components. Specifically, you’ll learn about function components. You’ll then learn how to manage application state and side effects. You’ll then learn about the useMemo hook to boost an application’s performance. You’ll learn about the useContext hook which enables us to perform area updates in our application. Finally, you’ll learn how to create custom hooks in React.

After completing this course, you can develop frontend applications with React. You’ll be able to develop complex web applications faster because React makes the process much easier.

Learn React Hooks for Frontend Development

Issues related to multiple instances and component life cycle management


What challenges arise when attempting to work directly with DOM elements under a React component?

What challenges arise when attempting to work directly with DOM elements under a React component?

It attaches and de-attaches DOM elements during the commit phase.

It provides a reference to a component's parent.

It specifies the React version being used.

It represents a reserved keyword in JSX syntax.

What does the <code>ref</code> prop do in React?

To prevent React from knowing the impact of the code

To avoid runtime errors by handling potential null values

To improve the reactivity of the component

To enable asynchronous handling of the `ref` object

Why is it necessary to check `ref.current` for validity before performing actions on it?

Why is it necessary to check <code>ref.current</code> for validity before performing actions on it?

To create an object for managing a value or a DOM instance persistently

To handle asynchronous operations in React components

What is the primary purpose of the `useRef` hook in React?

What is the primary purpose of the <code>useRef</code> hook in React?

It enhances the reactivity of the `ref` object.

It allows React to understand the impact of the code on the input element.


It facilitates direct manipulation of the DOM without constraints.


It ensures compatibility with older versions of React.

What additional feature does integrating state bring when using `useRef` to manage an input element?

What additional feature does integrating state bring when using <code>useRef</code> to manage an input element?

Test your understanding of the useRef hook in React.

Prologue

Introducing the Function Component

Crafting States in Functions

Hooking into React

Use State to Jumpstart Components

Use Effect to Handle Side Effects

Use Memo to Boost Performance

Use Context to Cover an Area

Use Ref to Hide Stuff

Use Custom Hooks to Reuse Logic

Conclusion

Appendix: Exploring JavaScript and React

Quiz: Use Ref to Hide Stuff