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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 โ€” 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.

Related Terms

Service Worker
A JavaScript file that runs in the background, enabling offline support, push notifications, and background sync for web apps.
Server-Sent Events
A server push technology that enables a server to send real-time updates to a browser over a single HTTP connection.
Web Caching Strategies
Techniques for storing copies of web resources at various levels to reduce server load, bandwidth, and response times.
Web Accessibility (a11y)
The practice of designing websites that can be used by people with disabilities, following WCAG guidelines.
Web Vitals
Google's metrics for measuring user experience quality, including loading speed, interactivity, and visual stability of web pages.
AJAX
A technique for making asynchronous HTTP requests from a web page without reloading the entire page.
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