Web Development Intermediate

What is Web Components?

A set of browser-native APIs for creating reusable, encapsulated custom HTML elements with their own styling and behavior.

Web Components use three main technologies: Custom Elements (define new HTML tags), Shadow DOM (encapsulated styling and markup), and HTML Templates (reusable markup structures). They work natively in modern browsers without frameworks.

Web Components are framework-agnostic — use them with React, Vue, Angular, or vanilla JavaScript. Libraries like Lit simplify Web Component development. They are ideal for design systems and shareable UI components.

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A technique that delays loading non-critical resources until they are needed, improving initial page load performance.

Web Accessibility (a11y)

The practice of designing websites that can be used by people with disabilities, following WCAG guidelines.

HTTP Status Codes

Standardized three-digit codes returned by web servers to indicate the result of a client's HTTP request.

The latest HTTP version that uses QUIC instead of TCP, providing faster connections and better performance on unreliable networks.

A JavaScript file that runs in the background, enabling offline support, push notifications, and background sync for web apps.

Progressive Enhancement

A web design strategy that starts with basic functionality for all browsers and progressively adds advanced features for capable ones.

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