React JS Full Course in Hindi/Urdu - Beginner to Pro

Today, we will dive into setting up a fresh project with React and TypeScript. This combination is powerful for building robust and scalable web applications. React is a popular JavaScript library for building user interfaces, while TypeScript is a superset of JavaScript that adds static typing to the language. By using TypeScript with React, we can catch errors early, improve code quality, and enhance developer productivity.

First, we need to ensure that Node.js is installed on our system. Node.js is a runtime environment that allows us to run JavaScript on the server-side. We can check if Node.js is installed by opening a terminal and running node -v. If Node.js is not installed, we can download it from the official website and follow the installation instructions. Once Node.js is set up, we can proceed to create a new React project using Create React App.

Create React App is a tool built by the developers at Facebook to help set up new React projects quickly and efficiently. To create a new project with TypeScript support, we can run npm create vite@latest in the terminal. This command will give you some options to create an app. We'll create a new React project with all the necessary configurations for TypeScript using this CLI command. We can then navigate into the project directory, install the package dependencies and then start the development server with npm start, and begin building our React application with TypeScript. With our project set up, we are ready to start coding and exploring the endless possibilities of React and TypeScript!

Setting up Tailwind CSS with your Vite-based React application can significantly streamline your development process and make styling your components a breeze. Tailwind CSS is a utility-first CSS framework that allows you to quickly style your elements using pre-built classes. By integrating Tailwind CSS into your React project, you can save time and maintain a consistent design system throughout your application. In this tutorial, we will walk through the steps to set up Tailwind CSS with Vite and demonstrate how to leverage its powerful features to style your React components efficiently.

The first step in setting up Tailwind CSS with Vite is to install the necessary dependencies. You will need to install Tailwind CSS itself, as well as its peer dependencies such as PostCSS and Autoprefixer. Once you have installed these dependencies, you can configure Tailwind CSS by creating a tailwind.config.js file in the root of your project. This file allows you to customize your design system by specifying colors, fonts, spacing, and more. By properly configuring Tailwind CSS, you can ensure that your styles are consistent and easy to maintain throughout your React application.

After installing and configuring Tailwind CSS, you can start using its utility classes to style your React components. You can apply classes like bg-blue-500 for background color, text-lg for text size, and p-4 for padding to quickly style your elements. Tailwind CSS also offers responsive classes like md:text-xl for styling based on screen size breakpoints. By leveraging these utility classes, you can create a beautiful and responsive design without writing custom CSS. With Tailwind CSS and Vite, you can make styling your React components a simple and enjoyable experience, allowing you to focus more on building functionality and less on writing CSS.

In this video, we're going to focus on cleaning up our code by removing the content from app.tsx and app.css files. It's essential to keep our codebase organized and maintainable to ensure smooth development and collaboration. By separating concerns and keeping our code lean, we can easily debug issues and add new features in the future. Removing unnecessary content helps in reducing clutter and improving the overall readability of our codebase.

After cleaning up the code, we'll create a simple heading in app.tsx to demonstrate the process of refactoring and restructuring code. This step will showcase how we can start with a small change and gradually enhance our codebase. By committing our changes and pushing them to a GitHub repository, we ensure that our code is safely stored and accessible to team members. This practice also enables us to track changes effectively and revert to previous versions if needed.

By following these best practices of code cleanup, refactoring, and version control, we establish a solid foundation for our React project. It not only improves the overall quality of our code but also enhances collaboration among team members. Remember, writing clean and well-organized code is a skill that every developer should strive to cultivate, as it contributes to the success and sustainability of any software project.

Deploying a Vite-based React app to GitHub Pages using GitHub Actions can streamline the deployment process and make it more efficient. GitHub Actions allow you to automate tasks, such as building and deploying your application, based on triggers like pushes to specific branches. By setting up a workflow in your repository, you can configure GitHub Actions to build your React app using Vite and deploy it to GitHub Pages with ease. This automation saves time and reduces the risk of human error during the deployment process.

To deploy a Vite-based React app to GitHub Pages using GitHub Actions, you first need to create a GitHub Actions workflow file in your repository. This file defines the steps that GitHub Actions will take when triggered. You can specify the build commands for your React app, configure the deployment to GitHub Pages, and set any necessary environment variables. By organizing these steps within a workflow file, you can ensure consistency in your deployment process and easily replicate it across different projects.

Once you have set up the GitHub Actions workflow file, you can push it to your repository and trigger the deployment process. GitHub Actions will then automatically build your Vite-based React app and deploy it to GitHub Pages according to the defined workflow. You can monitor the progress and view the logs in the Actions tab of your repository. By following this streamlined approach, you can deploy your React app efficiently and focus on developing your project rather than managing the deployment process manually.

JSX is a syntax extension for JavaScript, often used with React to describe what the UI should look like. The main idea behind JSX is to provide a way to write HTML-like code within JavaScript. This makes it easier to create and manage complex user interfaces.

With JSX, you can write HTML elements and components in a familiar way, allowing you to build UIs more efficiently. JSX also allows you to inject dynamic data into your UI elements and use JavaScript expressions, making it a powerful tool for building interactive and dynamic web applications.

Key Lesson Concepts:

• JSX is a syntax extension for JavaScript, used with React.

• It allows you to write HTML-like code within JavaScript.

• JSX makes it easier to create dynamic and interactive user interfaces.

Today, we're diving into the fundamental concepts of props and state in React components. Props and state are essential in React development as they allow us to manage and pass data between components efficiently. Props are read-only data that are passed from a parent component to a child component. They help in making components reusable and customizable by passing different values. For example, if you have a 'Button' component that needs to display different text, you can pass the text as a prop to render the button with the desired label.

On the other hand, state is mutable data managed within a component. When the state of a component changes, React will re-render the component to reflect the updated state. State is internal to a component and can be implemented using the useState hook (more on that later). It is crucial to manage state carefully to avoid unexpected behaviors in your application. For instance, if you have a 'Counter' component that needs to increment a value, you would store the count value in the state and update it accordingly when the button is clicked.

It's important to understand the differences between props and state to effectively design React components. Remember, props are used to pass data from parent to child components, while state is used to manage internal component data. By mastering props and state, you can build interactive and dynamic React applications that respond to user interactions and data changes gracefully. Practice implementing props and state in your components to solidify your understanding and take your React skills to the next level.

Event handlers in React play a crucial role in creating interactive and dynamic user interfaces. Whether you want to handle a form submission, capture input changes, or respond to a button click, event handlers are essential for capturing user actions and triggering the appropriate functionality. For instance, if you have a form that needs to be submitted upon user input, you can define an onSubmit event handler to listen for the form submission event and perform the necessary actions like sending data to a server or updating the state.

One of the key concepts to understand in React event handling is the use of synthetic events. React abstracts the native browser events into synthetic events for consistency and cross-browser compatibility. These synthetic events have the same interface as native events but are implemented in a way that ensures consistent behavior across different browsers. By using synthetic events, you can access event properties like event.target.value to retrieve the current value of an input field or event.preventDefault() to prevent the default behavior of an event, such as form submission.

When implementing event handlers in React components, it's important to consider best practices like binding the component instance to the event handler function or using arrow functions to automatically bind the function to the component's context. Additionally, you can pass parameters to event handlers by using arrow functions or binding the parameters directly in the event handler definition. By mastering event handling in React, you can create interactive and responsive user interfaces that provide a seamless user experience.

In this lesson, we will dive into dynamic and conditional rendering in React. When working on a project, you often encounter scenarios where you need to display content conditionally based on certain conditions. React provides us with various ways to achieve this. One common method is using ternary conditions, which allow you to render different elements based on a condition. For example, you can show a 'Welcome' message if a user is logged in, and a 'Login' button if they are not.

Another powerful tool in React for conditional rendering is the logical && operator. This operator is handy when you want to conditionally render a component based on a certain condition. It enables you to write concise and clean code by checking the condition inline. Additionally, we will explore the usage of if-else statements for more complex conditional rendering requirements. Understanding these different techniques will give you the flexibility to handle diverse scenarios effectively in your React applications.

Furthermore, we will discuss the concept of early return statements for improved code readability. By using early returns, you can exit a function early if a condition is met, avoiding unnecessary nested structures and improving the overall readability of your code. Lastly, we will explore how to render an array of items dynamically in React. This skill is crucial when you have a list of items that you want to display on your UI, such as a list of products or comments. By the end of this lesson, you will have a solid understanding of dynamic and conditional rendering in React, empowering you to build more interactive and responsive applications.

Today, we will delve into the fascinating world of React component lifecycle methods, focusing specifically on functional components. These methods allow us to control what happens during the various stages of a component's life, such as when it is created, updated, or removed from the DOM. By understanding and utilizing these methods effectively, we can build more efficient and interactive React applications.

One of the most fundamental lifecycle methods in React is the useEffect hook, which allows us to perform side effects in our functional components. These side effects may include data fetching, subscriptions, or manually changing the DOM. By using useEffect, we can ensure that these side effects are executed at the appropriate times during the component's lifecycle, preventing potential bugs and inconsistencies in our application.

Lastly, it's essential to grasp the concept of cleanup functions in React functional components. When we set up side effects using useEffect, we may also need to clean up after ourselves to avoid memory leaks or other issues. By returning a function from our useEffect hook, we can specify how to clean up any resources or subscriptions created during the component's lifecycle, ensuring that our application remains performant and stable.

In the world of web development, understanding the Virtual DOM is crucial when working with React. The Virtual DOM is a key concept that sets React apart from traditional front-end libraries and frameworks. It is a lightweight and efficient representation of the actual HTML DOM, allowing React to update and render components efficiently.

When a change occurs in a React component, the Virtual DOM is used to calculate the most efficient way to update the actual DOM. Rather than directly manipulating the DOM, React makes changes to the Virtual DOM first. It then compares the Virtual DOM with the actual DOM and only updates the necessary parts, minimizing performance overhead and ensuring a smooth user experience.

By understanding how the Virtual DOM works, developers can optimize their React applications and build performant user interfaces. Learning about the Virtual DOM also helps in understanding React's component lifecycle, state management, and the overall flow of data in a React application.

Key Lesson Concepts:

• Virtual DOM is a lightweight and efficient representation of the actual HTML DOM

• React uses the Virtual DOM to update and render components efficiently

• Understanding the Virtual DOM helps optimize React applications and improve user interface performance

In this lesson, you will learn about the various styling options available in React to enhance the visual design of your applications. Styling is an important aspect of front-end development, and React provides multiple ways to style your components effectively. By mastering these styling options, you can create visually appealing and user-friendly interfaces for your React applications.

One of the most common ways to style React components is through inline styling using the style attribute. This allows you to apply CSS styles directly within your JSX code. Another popular option is to use CSS Modules, which provide a way to encapsulate styles within a component file. Additionally, you can also use popular styling libraries like styled-components and Material-UI to create reusable and customizable styles for your React components.

Key Lesson Concepts:

• Learn about inline styling in React using the style attribute

• Understand how to use CSS Modules to encapsulate styles within components

• Explore popular styling libraries like styled-components and Material-UI

The useState hook is a fundamental feature in React that allows functional components to have state. With the useState hook, you can add stateful logic to your components without the need for class-based components.

By using the useState hook, you can manage component-specific state within functional components. The hook returns a stateful value and a function to update that value, providing a simple and efficient way to manage state in React applications.

When using the useState hook, it is important to remember that the initial state is only used during the first render. Subsequent re-renders will use the updated state value. Additionally, the useState hook can be called multiple times in a single component to manage multiple state values.

Key Lesson Concepts:

• useState hook allows functional components to have state

• It returns a stateful value and a function to update that value

• Initial state is only used during the first render

• Multiple calls to useState can manage multiple state values in a component

Today, we're going to dive deep into mastering the three key usages of the useEffect Hook in React. The useEffect Hook is a powerful feature in React that allows us to perform side effects in function components. Side effects can include data fetching, subscriptions, or manually changing the DOM, among other things. By understanding and utilizing the useEffect Hook effectively, you can take your React applications to the next level.

The first important usage of the useEffect Hook is to perform side effects after the component has rendered. This is crucial for tasks like data fetching from an API, updating the document title, or setting up event listeners. By using the useEffect Hook with an empty dependency array [], you can ensure that the side effect runs only once after the initial render. This helps in keeping your components efficient and avoiding unnecessary re-renders.

Another key usage of the useEffect Hook is to handle cleanup of side effects. In some cases, side effects may need to be cleaned up to prevent memory leaks or conflicts. By returning a function from the useEffect Hook, you can specify the cleanup logic for a side effect. This function will run before the component unmounts or before running the effect next time. Understanding how to properly clean up side effects is essential for building robust and maintainable React applications.

The useContext hook is a powerful feature in React that allows you to access state or context within functional components without having to pass props down from parent components. This hook is especially useful when you have multiple levels of nested components that all need access to the same data. By using the useContext hook, you can avoid prop drilling and make your code more efficient and easier to maintain.

When using the useContext hook, you first need to create a context using the createContext function. This context will define the shape of the data that will be passed down to the components. Next, you can use the useContext hook in any functional component to access the data stored in the context. This allows you to access the data directly without having to pass it down through props from parent components.

Overall, the useContext hook is a valuable tool in React for managing state and sharing data between components. By using this hook, you can simplify your code, improve performance, and make your application more scalable. Understanding how to effectively use the useContext hook will greatly enhance your React development skills and help you build more robust and dynamic applications.

Key Lesson Concepts:

• Access state or context in functional components

• Create context using createContext function

• Improve code efficiency and scalability

In this lesson, you will learn about custom hooks in React. Custom hooks allow you to extract component logic into reusable functions, making your code more maintainable and easier to understand. By creating custom hooks, you can share logic between components without repeating code, improving the overall efficiency of your application.

Custom hooks are a powerful feature in React that enables you to abstract complex logic into separate functions that can be easily reused across different components. You will learn how to create custom hooks, how to use them in your components, and best practices for designing and implementing custom hooks in your React applications.

By the end of this lesson, you will have a strong understanding of how custom hooks work and how they can help you write cleaner, more maintainable code in your React projects. You will be able to create your own custom hooks to encapsulate and reuse logic, simplifying the development process and improving the overall structure of your applications.

Key Lesson Concepts:

• Custom hooks allow you to extract component logic into reusable functions

• They enable you to share logic between components without repeating code

• You will learn how to create, use, and implement custom hooks in React

Redux is a powerful state management tool commonly used in React applications. In this lesson, we will delve into the basics of Redux, starting with a brief recap of the Context API. Just like the Context API, Redux helps in managing the global state of an application. However, Redux follows a different approach by introducing concepts like reducers, actions, and the Redux store.

When working with Redux, components or views interact with the central Redux store in two main ways. First, components can select specific values from the store using the useSelector hook. This allows components to access the required data from the store without directly modifying it. Second, components can dispatch actions to the store using the useDispatch hook. Dispatching actions is the primary way of updating the state in the Redux store, triggering changes that propagate throughout the application.

Understanding how components interact with the Redux store is crucial for effectively managing state in a React application. By utilizing useSelector and useDispatch, components can efficiently access and update the global state, ensuring a seamless flow of data and actions throughout the application. In the upcoming lessons, we will explore these concepts further and create practical examples to solidify our understanding of Redux in React.

In this video, get into the practical aspect of React by building our first mini project. The first step is creating a new React app using Vite. We start by defining two components, Notifications and Header, that will be crucial for our project. The Notifications component will display the list of notifications, while the Header component will serve as the top section of our app.

Next, we move on to creating the NotificationsButton component, which will be responsible for displaying a bell icon along with the count of unread notifications. This component provides a visual cue for new notifications to the user. By accurately implementing this feature, we can improve the overall usability of our application. Attention to detail in components like NotificationsButton is what sets apart a good React developer from a great one.

To manage the notifications list efficiently, we integrate Redux Toolkit into our project. As we know now, Redux Toolkit is a powerful tool that simplifies the management of state in React applications. We utilize it to store the notifications list and create a selector that computes the count of unread notifications. This enables us to keep track of new notifications easily and display the updated count in real-time.

In this lesson, we will cover the essential steps to set up and configure a React Router to create some routes. React Router helps us create multiple pages within our application while enabling client-side routing in our application.

In this video, we'll create some routes for our application including the following:

• Home Page route

• Contacts Page route

  • This displays a list of contacts from a hard-coded array

• Contact Details Page route

  • This displays a particular contact's detail page

For the Contact Details Page route, we will hard-code the contents of the template for now. We will use the createBrowserRouter method from react-router-dom to create our router. We'll also use the pages folder to host all our page components. We will create a default Error component and will bind it using the errorElement attribute on the root route. Apart from this, we will also create a RootLayout component as our shared root layout which will contain our application's Header component so the header is shown on all pages.

In this video, we are looking in-depth into Route Loaders and Router Params in React. These tools are essential for dynamically loading data based on the route the user is on. With the new react route loader functions, we have more control over how and when data is loaded, resulting in a smoother and more efficient user experience. By the end of this lesson, you'll have a solid understanding of how to implement route loaders in your React applications.

One of the key aspects we'll be focusing on is implementing a route loader to fetch a list of contacts (people) from a third-party API for the contacts list page. This is a common scenario in web development, where we need to fetch data from an external source and display it in our application. We'll walk through the steps of setting up the route loader, making the API call, and rendering the contacts list retrieved. By the end, you'll have a fully functional contacts list page that dynamically fetches and displays contact information.

In addition to the contacts list page, we'll also implement a route loader for the contact details page. This will allow us to fetch specific contact details when a user navigates to the details page for a particular contact. We'll cover how to extract router params to identify the selected contact, make the API call to fetch the contact details, and update the state accordingly. By the end of this lesson, you'll have a comprehensive understanding of how to use route loaders and router params together to create dynamic and data-driven React applications.

In this video, we will look into the practical implementation of React Router Action functions with the

Form component from React Router. By utilizing React Router Action functions, we can easily create dynamic routes and handle user interactions effectively. For instance, we can set up routes for creating a new contact or deleting a contact, providing a seamless user experience. This results is completely avoiding useState and useEffect hooks. Which is super-interesting.

By the end of this lecture, you will have a comprehensive understanding of how React Router Action functions work in the wild with the Form component from React Router. You will also grasp the concept of integrating API calls of a backend server to implement user actions seamlessly. This practical knowledge will equip you with the skills needed to develop interactive and dynamic web applications that deliver a superior user experience. So, let's dive in.

In this lesson, we will explore the concept of nested routes in React. Nested routes allow us to create more complex and dynamic navigation structures in our applications by defining routes within other routes. This can be useful for organizing our code, creating more modular components, and improving the overall user experience. We will also look into how to highlight the active links. I.e. the Route we're on. This helps the user see clearly in the header or nav which route we are on at the moment.

By the end of this lesson, you will understand how to set up nested routes in a React application using popular libraries such as React Router. We will cover topics such as defining parent and child routes, using the index route, and using the NavLink component from React Router to highlight the current route in a different manner.

For this assignment, we already have a React App with a contacts route that displays a table of contacts with a "delete" action on each row. Additionally, we have a contact details page that also includes a delete button. The task at hand is to implement the "duplicate" functionality for both the contacts list and the details page. This feature will allow users to create a copy or duplicate of a contact entry easily. By adding this functionality, we can enhance the user experience and provide them with a convenient way to duplicate contacts.

Hint: You can use the same createContact function in the contactsApi.ts file. But calling it with prefilled values from existing contacts. Think about what values you should pass to createContact function for duplication.

Furthermore, we aim to introduce the "edit" contact feature to our React App. This new functionality will enable users to modify the contact information directly from the application. By incorporating the edit feature, we empower users to update and customize their contact details as needed. For this feature, you will need another route. You can call it contacts/:contactId/edit . This will have a form similar to the create contact form. The difference is that it will be prefilled when you come to this route by clicking a contact's edit button.

To make the API call for edit/update, you have to create another function in the contactsApi.ts file. You can name it updateContactByID which receives a contactId and a contact: Partial<Contact> as arguments. The http call for this will be a PATCH call against the URL http://localhost:3000/contacts/:contactId .

In conclusion, by implementing the "duplicate" functionality for both the contacts list and details page, as well as adding the "edit" contact feature, we enhance the functionality and user interaction of our React App. These features not only improve the user experience but also showcase your skills of adding new features to an existing app.

Testing is an essential part of building reliable and high-quality React applications. In this lesson, we will explore the importance of testing in React development and how it can help catch bugs early in the development process. We will also cover the different types of testing that can be performed in React, including unit testing, integration testing, and end-to-end testing.

We will delve into popular testing libraries and tools such as Jest & React Testing Library, and learn how to write test cases for React components. By the end of this lesson, you will have a solid understanding of why testing is crucial in React development and how to effectively implement testing strategies in your own projects.

Key Lesson Concepts:

• Understanding the importance of testing in React development

• Exploring different types of testing in React: unit testing, integration testing, end-to-end testing

• Learning popular testing libraries and tools such as Jest, React Testing Library, and Playwright

In this video, we will delve into setting up Vitest for testing React Components alongside @testing-library/react. Testing is a crucial aspect of software development as it ensures the reliability and functionality of our code. By setting up Vitest, we can streamline the testing process and catch any potential bugs early on in the development cycle. This tool allows us to write comprehensive test suites that cover various scenarios and edge cases, ultimately leading to a more robust React application.

Furthermore, we will also set up the types for Vitest, which will help in using the correct vitest methods using VS Code's intellisense as well.

Lastly, we will walk through writing our first test suite and our first test using Vitest. This hands-on experience will give you a practical understanding of how to structure your test suites, write test cases, and assert expected outcomes. By following along with the examples in this video, you will gain confidence in writing tests for your React components and be equipped with the knowledge to effectively validate the functionality of your codebase using Vitest and @testing-library/react.

In this video, we dive into the process of writing unit tests for a simple counter application in React. Unit tests are essential for ensuring the reliability and functionality of our code. We break down the different functionalities of our counter app, such as incrementing, decrementing, and resetting the count value, into individual units. By treating each of these functions as a unit, we can thoroughly test their behavior and interactions in isolation, allowing us to catch any potential bugs or issues early on in the development process.

For writing our unit tests, we will be using tools like Vitest and "testing-library/react"

By the end of this video, you will have a solid understanding of how to write unit tests for a React application, specifically focusing on a simple counter app. You will learn the importance of breaking down your code into individual units for testing, how to use Vitest and "testing-library/react" for writing tests, and the significance of thorough testing in ensuring the reliability and quality of your code. This knowledge will not only help you in this specific example but also in your future React projects, enabling you to write robust and error-free code.

In this module, we are looking at the Pizza restaurant app we're creating in this module. The app we will create will have various features that mimic a real-world scenario, such as rendering a pizza menu with different options, allowing users to add items to their cart, facilitating the checkout process, and displaying the final orders made by customers. By the end of this module, you will have a thorough understanding of how to implement these functionalities using React components, state management, Redux, React router, and much more.

Today, we are going create the routes for our Pizza restaurant app in React. Routes are essential for navigating through different pages of a web application. We will be creating pages for Home, Menu, Cart, Checkout, and Order. Each of these pages will serve a specific purpose in our app. The Home page will greet users and display a name and image. The Menu page will display the delicious pizzas available for order. The Cart page will show the selected items before checkout. The Checkout page will handle the payment process. Lastly, the Order page will render the order and provide a summary of the transaction.

Today, we are going to create a Root Layout for our Pizza restaurantapplication. This layout will serve as the foundation for all our pages, including Home, Menu, Cart, Checkout, and Order. By implementing a Root Layout, we ensure that our app maintains a consistent look and feel across all its sections. This not only enhances the user experience but also streamlines the development process, making it easier to manage and update the app in the future.

When designing the Root Layout, it's crucial to pay attention to the UI consistency. This involves defining common elements such as headers, avigation menus, and styling guidelines that will be shared across all pages. By structuring our layout in this way, we create a seamless flow for the user as they navigate through different sections of the app. Additionally, maintaining consistency in design helps in establishing brand identity and reinforcing user familiarity with the interface, ultimately leading to better user engagement and retention.

In this video, we're going to set up our Redux store for the app. First, we're going to create a slice name cartSlice so we can add the menu items to it. And for this, we'll also create the reducer/action. Then we'll add dispatch this action whenever we click the + (plus) button, or the Add to cart button from a menu item.

In this video, we create all the menu item actions needed for the redux store. We'll create the remove item (which reduces the quantity of the item), and to remove an item completely from the cart. We'll also create some selectors to show the total items in the cart in the Header component alongside the total amount (price) of the cart items.

In this video we persist our Redux store's state in the browser's localStorage. This means whenever the user leaves the app, closes the browser, or just refreshes the page, the cart items will still be saved so the user can checkout later. We implement this persistence using the redux-persist package. And even though the package is 5 years old, it still works brilliantly.

In this lesson, we are imeplemting the cart page in our React application. By rendering the items in the cart, users can easily see what they have selected for purchase. Additionally, we will be providing the functionality to increase or decrease the quantity of each item in the cart. This interactive feature enhances the user experience and allows for easy customization of their order.

Furthermore, we will be displaying the total price of all items in the cart. Calculating and showing the total price is crucial for users to have a clear understanding of the cost of their selected items before proceeding to checkout.

And all of this will be integrated with our Redux store. We are leveraging the power of state management to streamline the flow of data within our application.

In this lecture, we're implementing the checkout page in our React application. The checkout page plays a crucial role in any e-commerce flow as it provides users with a snapshot of their cart's contents before they make a purchase. For our case, the page includes an order summary, detailing the items in the cart along with their prices and quantities. This summary gives users a chance to review their order before proceeding to the payment step, ensuring transparency and helping prevent any surprises at the checkout.

Alongside the order summary, the checkout page also features a widget to add payment card details. This widget allows users to securely input their card information, including the card number, expiration date, CVV, and the buyer's name. Implementing this functionality involves handling form input, validation, and masking the card number before saving to the Redux store. By including this widget on the checkout page, we create a seamless and convenient experience for users, enabling them to complete their purchase (theoretically) efficiently and securely.

In this lecture, we also implement a custom hook called useKeyPress to use a shortcut (Ctrl + Shift + H) to automatically fill the card details.

In this video, we're going to create the Redux slice for our orders. To begin, we need to configure the store with a Redux slice where all the orders will be saved. This slice will act as a separate section within the store dedicated to managing orders specifically. By setting up this slice, we establish a clear structure for handling order-related data within our application. This segregation helps in keeping our code organized and easy to manage as our project grows in complexity.

Next, we will move on to creating actions within this slice using the Redux Toolkit. Actions are payloads of information that send data from your application to your Redux store. With the help of Redux Toolkit, we can efficiently define these actions without writing boilerplate code. These actions will enable us to perform CRUD operations on orders such as creating new orders, and deleting outdated ones. By encapsulating these actions within our Redux slice, we ensure a clean and consistent way to interact with order data throughout our application.

By the end of this lesson, you will have a fully functional Redux slice set up for managing orders in your React application. You'll understand the importance of organizing your state management using slices and how Redux Toolkit simplifies the process of creating actions within these slices.

In this lecture, we are implementing the Order page in our Pizza Restaurant application. Users can go directly to this page with the orderId and render an existing order on this page based on the orderId. One key feature we will be adding is a search functionality that allows users to enter an order number in the toolbar input field to quickly locate a specific order.

By the end of this lecture, you will have a fully functional Order page that showcases existing orders and allows users to search for specific orders with ease. We'll also refactor the MenuItem component to work both on the Menu and Cart pages, and on the Checkout page too. For this, we'll create an HOC (Higher Order Component) so we can pass Pizza to it, and that HOC passes Pizza & quantity to the MenuItem component as a result.

After implementing these features, our Pizza Restaurant app will be completed.