Web Components are web platform APIs allowing developers to create reusable, encapsulated, modular UI elements. Unlike traditional JavaScript frameworks, Web Components work natively in the browser, meaning they don't require additional dependencies.Web Components can be used across different projects and frameworks (reusable). Works with any framework or vanilla JavaScript.
A Web Component consists of three main technologies:
- Custom Elements – Define new HTML elements with custom behavior.
- Shadow DOM – Encapsulates styles and markup to prevent conflicts.
- HTML Templates – Reusable chunks of HTML that can be used dynamically.
Lit
Lit is a lightweight library built on top of Web Components that simplifies their creation and usage. It provides simple syntax and built-in features. It can be used to build sharable components, design systems, and even sites and apps.
How to Create a Custom Lit Component?
Run the below command in the terminal to create a Lit project using Vite.
npm create vite@latest my-lit-app --template lit
Here’s a basic example of a Lit Web Component:
import { LitElement, html, css } from 'lit';
class HelloWorld extends LitElement {
static styles = css`
p { color: blue; font-size: 18px; }
`;
render() {
return html`<p>Hello, World!</p>`;
}
}
customElements.define('hello-world', HelloWorld);
How to use the built component?
<!DOCTYPE html>
<html lang="en">
<head>
<script type="module" src="/path/to/my-component.js"></script>
</head>
<body>
<hello-world></hello-world>
</body>
</html>
Lit makes working with Web Components easier, enabling developers to build fast, and reusable components with minimal overhead. Whether you're creating a small UI component or a full-fledged design system, Lit provides an efficient way to work with modern web standards.
Experiment with Lit: Lit Playground
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