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React Anti-Patterns

React Anti-Patterns

By : Juntao Qiu
4.8 (10)
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React Anti-Patterns

React Anti-Patterns

4.8 (10)
By: Juntao Qiu

Overview of this book

Take your React development skills to the next level by examining common anti-patterns with expert insights and practical solutions, to refine your codebases into sophisticated and scalable creations. Through this easy-to-follow guide, React Anti-Patterns serves as a roadmap to elevating the efficiency and maintainability of your React projects. You’ll begin by familiarizing yourself with the essential aspects of React before exploring strategies for structuring React applications and creating well-organized, modular, and easy-to-maintain codebases. From identifying and addressing common anti-patterns using refactoring techniques to harnessing the power of test-driven development (TDD), you’ll learn about the tools and techniques necessary to create reliable and robust tests. As you advance, you’ll get to grips with business logic and design patterns that offer solutions to prevalent challenges faced in React development. The book also offers insights into using composition patterns, such as code splitting and multiple entry points, to enhance the flexibility and modularity of your React applications, guiding you through end-to-end project implementation. By the end of this React book, you’ll be able to overcome common challenges and pitfalls to transform your React projects into elegant, efficient, and maintainable codebases.
Table of Contents (20 chapters)
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Free Chapter
1
Part 1:Introducing the Fundamentals
6
Part 2: Embracing Testing Techniques
10
Part 3: Unveiling Business Logic and Design Patterns
14
Part 4: Engaging in Practical Implementation

Implementing the menu list

Even a basic menu list featuring just the names of pizzas can be valuable for customers who are looking to browse and decide what to eat. While The Code Oven may not be set up for online ordering yet, it serves as a useful starting point.

Looking at the second task on our list, we can write our second test like so:

it("renders menu list", () => {
  render(<PizzaShopApp />);
  const menuList = screen.getByRole('list');
  const menuItems = within(menuList).getAllByRole('listitem');
  expect(menuItems.length).toEqual(8);
});

This test starts by rendering the component. Then, it identifies the HTML element tagged with the list role from the rendered component. Using the within function, it narrows down the search to only that list and locates all items within it tagged with listitem. Finally, it asserts that the number of such items should be equal to 8 (the number of items...

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