Web Components Architecture

1. Introduction

Web Components is a suite of different technologies allowing you to create reusable custom elements with encapsulated functionality that can be used in web applications. They enhance the modularity and maintainability of web applications.

2. Key Concepts

3. Creating Web Components

Follow these steps to create a basic web component:

1. Define a template for the component.
2. Create a class that extends HTMLElement.
3. Attach a shadow DOM.
4. Implement lifecycle methods like connectedCallback.
5. Register the custom element.

class MyComponent extends HTMLElement {
    constructor() {
        super();
        const shadow = this.attachShadow({ mode: 'open' });
        const wrapper = document.createElement('div');
        wrapper.textContent = 'Hello, Web Component!';
        shadow.appendChild(wrapper);
    }
}

customElements.define('my-component', MyComponent);
                

4. Best Practices

• Keep components small and focused on a single responsibility.
• Use attribute reflection to manage properties.
• Encapsulate styles using Shadow DOM to avoid style leakage.
• Utilize lifecycle methods effectively to manage component state.
• Document your components for easier usage.

5. FAQ