Such tools include Vite, Snowpack, Gatsby, Next.js, Percel, and so on. React is an open-source JavaScript library that helps you build dynamic user interfaces (UIs). You can use it to build components that represent logically reusable parts of the UI. The Virtual DOM is a key part of modern web development. It acts like a middle layer between the user’s screen and the actual web page.
- A component can be as small as a button, or as large as an entire page.
- Frameworks like Next.js and Gatsby make React even better by offering features like server-side rendering and static site generation.
- React’s primary goal is to minimize the bugs that occur when developers are building UIs.
- React has been designed from the start for gradual adoption.
It’s important to understand how JSX is compiled into JavaScript. But, before diving into the coding aspects, you need to set up your development environment. The installation process will ensure you have all the necessary tools, such as Node.js and npm (or Yarn), to run and manage React applications efficiently. React itself does not come with built-in support for routing.
React Tutorial
Understanding the useEffect hook in React can be simple. It helps you run code when your component shows up or changes. You can think of it like a helper that watches for updates.
The frameworks we recommend have built-in solutions for these problems. More specifically, this is where you target the root id from the index.html file and render the App.js file, which is where your entire file (components and pages) will meet. When you open the file, you will see a list of files that are being ignored, including the node_modules and build folder. To re-install these dependencies, you can use npm install – this will check the pakage.json file for a list of the dependencies and then install all of them.
Ready to get started?
React is a powerful library that helps developers build fast and scalable web applications. By learning key concepts like components, state management, hooks, and routing, you can create efficient and easy-to-maintain apps. Frameworks like Next.js and Gatsby make React even better by offering features like server-side rendering and static site generation. No matter if you’re a beginner or an experienced developer, React has a lot to offer. With the right tools and knowledge, you can build amazing applications and bring your ideas to life.
To read more about JSX, check out the React team’s Writing Markup with JSX article.
Templates are always named in the format cra-template-template-name, however you only need to provide the template-name to the creation command. React Compiler is a tool that automatically optimizes your React app. See our recommended editors and learn how to set them up to work with React.
How does React use JavaScript?
If you use a build tool or a framework, consult its documentation to learn how to add a CSS file to your project. Vite is a very fast and customizable modern tool that aims to provide a linear development experience for modern web projects. You can use it to create your React apps in a fast and reliable way. It also has the same features as create-react-app (CRA). Recently, create-react-app has become deprecated and the React team doesn’t recommend using it anymore. Other modern tools provide a faster front-end development experience, and and you can use them to create React apps without stress.
React Roadmap: A Complete Guide 2025 Updated
React is a top choice for developers because it makes building modern web applications easier and faster. It allows you to break down complex user interfaces into simple, reusable components, making code easier to manage and update. React also updates only the parts of the page that need changes, improving performance. With its large community, rich ecosystem, and constant updates, React is highly flexible, making it suitable for both small and large-scale projects. Whether you’re a beginner or experienced, React provides the tools to create interactive and efficient websites with ease.
- Props in React are like special tools that help you pass information from one part of your app to another.
- This early version is documented in Jordan Walke’s GitHub repository.1 Influences for the project included XHP, an HTML component library for PHP.
- A component is a piece of the UI (user interface) that has its own logic and appearance.
All of the tools we recommend for local development support JSX out of the box. The react native developer React library is a powerful open-source JavaScript tool you can use to create dynamic and appealing applications. It is actually a fun framework to get your hands on, so I recommend trying it out. To build for the web, developers use React in tandem with ReactDOM.
React isn’t just for big, complex projects — it’s designed to be simple enough for beginners and powerful enough for experienced developers. With its focus on performance and reactivity, React allows you to create websites that are faster, more responsive, and easier to maintain. At the core of React is its basic syntax and structure, which is essential for understanding how the library works. JSX (JavaScript XML) is a syntax extension that looks similar to HTML, allowing you to write components with a combination of HTML and JavaScript in a single file.
If you want to use useState in a condition or a loop, extract a new component and put it there. You can also write your own Hooks by combining the existing ones. All of these approaches also work for conditionally specifying attributes. If you’re unfamiliar with some of this JavaScript syntax, you can start by always using if…else. Roadmap.sh is the 6th most starred project on GitHub and is visited by hundreds of thousands of developers every month.
This allows the choice of whichever libraries the developer prefers to accomplish tasks such as performing network access or local data storage. Common patterns of usage have emerged as the library matures. React components are the building blocks of any React application. Components are responsible for rendering the UI and controlling the logic of how things work.
Create React App is an officially supported way to create single-page Reactapplications. The best way to install React or create a React project is to install it with create-react-app. This is one of the steps that most beginners struggle with, but in this guide, we’ll go over how to get started properly and successfully.
This article will help you decide which tool fits your project best. This article is going to focus on the use case of using React to render the entire user interface of an application with the support of Vite, a modern front-end build tool. Unlike the other frameworks covered in this module, React does not enforce strict rules around code conventions or file organization.
