Frontenddelen

Frontenddelen, a term used in Scandinavian languages, refers to the client-side portion of a software application responsible for presenting information and handling user interaction. It runs in the user's environment, typically a web browser or a mobile runtime, and communicates with backenddelen through APIs over HTTP or WebSocket. The word distinguishes the front-end from the server-side logic and data processing performed on the backend.

Responsibilities of frontenddelen include rendering the user interface, managing user input, presenting data, and ensuring accessibility and responsive design. Core technologies are HTML for structure, CSS for styling, and JavaScript for behavior. Modern development often employs frameworks such as React, Angular, Vue.js, or Svelte, as well as build tools like Vite or Webpack and package managers such as npm or yarn. Performance considerations, including code-splitting and lazy loading, are common.

Architectural approaches for frontenddelen include single-page applications (SPAs), server-side rendering with hydration, progressive web apps (PWAs), and micro-frontend architectures that split the frontend into independent parts. State management, client-side routing, and UI component libraries are typical concerns. The frontend communicates with the backend via REST or GraphQL APIs, with API contracts and schemas guiding integration.

Development processes emphasize design systems, component-driven development, and design tokens. Testing covers unit and integration tests, accessibility testing, and browser compatibility. Collaboration with backend teams, designers, and product managers is common, and deployment is typically handled through CI/CD pipelines, with deployment targets ranging from static hosting to server-rendered environments.