Building Web Components

Web Components are a set of web platform APIs that allow you to create reusable custom elements with encapsulated functionality. This lesson will guide you through the process of building Web Components.

2.1 Definitions

• Custom Elements: Define new HTML tags and manage their lifecycle.
• Shadow DOM: Encapsulate styles and markup so they don't affect the rest of the page.
• HTML Templates: Define markup that isn't rendered until instantiated.

3.1 Step-by-Step Process

                // Define a 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);
                    }
                }

                // Register the custom element
                customElements.define('my-component', MyComponent);
            

3.2 Using the Component

                // Use the component in HTML
                
            

4.1 Recommendations

• Use meaningful names for custom elements.
• Encapsulate styles within the Shadow DOM.
• Reuse components where possible to minimize redundancy.
• Test components across different browsers to ensure compatibility.