How to useCustom Elements with Shadow DOM in Javascript
Creating custom web components using the Shadow DOM is a modern approach to building reusable and encapsulated UI elements for your web applications. Custom elements with the Shadow DOM offer a way to define your own HTML elements.
Syntax:
class MyCustomElement extends HTMLElement {
}
customElements.define('my-custom-element', MyCustomElement);
Example: This example shows the use of the above-explained approach.
HTML
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title> Custom Element </title> <style> h1 { color: #336699; } </style> </head> <body style="background-color: #C0C0C0;"> <my-custom-element></my-custom-element> <script> class MyCustomElement extends HTMLElement { constructor() { super(); const shadowRoot = this.attachShadow({ mode: 'open' }); const paragraph = document.createElement('p'); paragraph.textContent = '**This is custom element with Shadow DOM**'; shadowRoot.appendChild(paragraph); const style = document.createElement('style'); style.textContent = ` p { color: red; } `; shadowRoot.appendChild(style); } } customElements.define('my-custom-element', MyCustomElement); </script> </body> </html> |
Output:
Web Components: Building Custom Elements with JavaScript
In web development, creating reusable and encapsulated components is crucial for building scalable and maintainable applications and Web Components offer a powerful solution to this challenge by providing developers with the ability to build custom HTML elements with their functionality and styling. This article introduces Web Components and explores how they can enhance the development process and make it easier to create modular and reusable code.
Web Components are a set of web platform APIs that allow you to create custom, reusable, and encapsulated components for building web applications components can be used on any web page regardless of the framework or library being used and promote a modular and standardized approach to web development.
They consist of two main specifications:
Table of Content
- Using Custom Elements with Shadow DOM
- Using HTML Templates
Contact Us