The part of an application that users see and interact with directly, such as web pages and app screens.
Frontend development turns designs into working interfaces. On the web, this means writing HTML for structure, CSS for styling, and JavaScript or TypeScript for interactivity. Frontend developers often use libraries and frameworks such as React, Vue, Angular, or Svelte.
Good frontend work goes beyond appearance. It includes responsive layouts that work on phones and large screens, accessibility for people using screen readers or keyboards, fast loading, and clear handling of errors and loading states. The frontend communicates with the backend through APIs to fetch and send data. With modern tools, some logic once handled by servers now runs in the browser, which makes the boundary between frontend and backend less rigid than it used to be.
The server-side part of an application that handles data storage, business logic, and integrations, out of the user's direct view.
Full-Stack DeveloperA developer who works on both the frontend and backend of an application, from user interfaces to servers and databases.
Progressive Web AppA website built with modern web technologies that behaves like an installable app, with features such as offline use and notifications.
ReactAn open-source JavaScript library for building user interfaces out of reusable components, originally developed at Facebook.
Responsive DesignA web design approach that makes pages automatically adapt their layout to fit any screen size, from phones to large monitors.
User ExperienceThe overall experience a person has when using a product or service, including how easy, useful, and satisfying it feels.
User InterfaceThe visual and interactive elements, such as screens, buttons, menus, and forms, through which people interact with software or devices.
WebAssemblyA compact binary format that lets code written in languages like C++, Rust, and Go run in web browsers at near-native speed.
XSSCross-Site Scripting: a web vulnerability that lets attackers inject malicious scripts into pages viewed by other users.
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