Read the notes, then try the practice. It adapts as you go.When you're ready.
Session Length
~17 min
Adaptive Checks
15 questions
Transfer Probes
8
Full-stack web development encompasses the complete spectrum of building web applications, from the user-facing interface (front end) to the server-side logic and database management (back end). A full-stack developer possesses the skills to work across all layers of the technology stack, including HTML, CSS, and JavaScript on the client side, server-side languages and frameworks such as Node.js, Python, or Java, and database systems like PostgreSQL or MongoDB. This breadth of knowledge enables a single developer or team to architect, build, deploy, and maintain an entire web application from start to finish.
The front end of a web application is responsible for everything the user sees and interacts with in the browser. Modern front-end development relies heavily on JavaScript frameworks like React, Angular, or Vue.js to create dynamic, responsive user interfaces. The back end, by contrast, handles business logic, authentication, data processing, and communication with databases and external services through APIs. Frameworks such as Express.js, Django, Ruby on Rails, and Spring Boot provide structured approaches to building robust server-side applications that can scale to serve millions of users.
Full-stack development also involves essential practices beyond writing code, including version control with Git, automated testing, continuous integration and deployment (CI/CD), containerization with Docker, and cloud hosting on platforms like AWS, Azure, or Google Cloud. Understanding how these tools and workflows fit together is what separates a capable full-stack developer from someone who simply knows multiple programming languages. The discipline continues to evolve rapidly, with trends like serverless computing, microservices architecture, and JAMstack reshaping how modern web applications are designed and delivered.
One step at a time.
An architectural style for designing networked applications that uses standard HTTP methods (GET, POST, PUT, DELETE) to perform CRUD operations on resources identified by URLs. REST APIs are stateless, meaning each request contains all information needed to process it.
Example: A GET request to /api/users/42 retrieves the user with ID 42, while a DELETE request to the same URL removes that user from the database.
A software design pattern that separates an application into three interconnected components: the Model (data and business logic), the View (user interface and presentation), and the Controller (handles input and updates the model and view).
Example: In a Rails application, a User model defines the database schema and validations, a users_controller.rb handles HTTP requests, and an ERB template renders the HTML view.
A web application that loads a single HTML page and dynamically updates content as the user interacts with the app, rather than requesting entirely new pages from the server. This approach provides a smoother, app-like user experience.
Example: Gmail is a SPA: once loaded, clicking between inbox, sent mail, and drafts does not trigger full page reloads. React Router handles URL changes entirely on the client side.
A programming technique that maps database tables to objects in an application's programming language, allowing developers to interact with the database using the language's native syntax rather than writing raw SQL queries.
Example: Using Sequelize in Node.js, you can write User.findAll({ where: { age: { [Op.gt]: 18 } } }) instead of the raw SQL query SELECT * FROM users WHERE age > 18.
Software that sits between the client request and the server response in a web application, performing tasks such as logging, authentication, error handling, or data transformation before the request reaches its final handler.
Example: In an Express.js app, an authentication middleware checks for a valid JWT token in the request header before allowing access to protected routes.
An approach to web design that ensures a website's layout and content adapt fluidly to different screen sizes and devices, using techniques like flexible grids, media queries, and relative units.
Example: A navigation bar that displays horizontally on desktop screens automatically collapses into a hamburger menu on mobile devices using CSS media queries at a 768px breakpoint.
A system that records changes to files over time so that specific versions can be recalled later. Git is a distributed version control system that enables multiple developers to collaborate on the same codebase through branching, merging, and pull requests.
Example: A developer creates a feature branch called feature/user-auth, commits changes, pushes to GitHub, and opens a pull request for team review before merging into the main branch.
A set of practices where code changes are automatically built, tested, and deployed to production. CI ensures that new code integrates cleanly with the existing codebase, while CD automates the release process.
Example: A GitHub Actions workflow automatically runs unit tests, builds a Docker image, and deploys the application to AWS whenever code is pushed to the main branch.
More terms are available in the glossary.
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See how the key ideas connect. Nodes color in as you practice.
Walk through a solved problem step-by-step. Try predicting each step before revealing it.
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