Examples
HTML Custom Component
Implementing a Custom Component
HTML custom component uses custom elements for reusable widgets.
Introduction to HTML Custom Components
HTML custom components are a powerful feature of modern web development, allowing developers to create custom elements for reusable widgets. By utilizing the Custom Elements API, you can define your own HTML tags, encapsulate functionality and styles, and enhance your application's modularity and maintainability.
Defining a Custom Element
To define a custom element, you need to create a class that extends HTMLElement. This class will include methods to handle the lifecycle of the element, such as connectedCallback and disconnectedCallback. After defining the class, register it with the browser using customElements.define().
Using Your Custom Element in HTML
Once your custom element is defined, you can use it in your HTML like a standard element. Simply include it in your HTML code by using the custom tag name you defined.
Styling Custom Elements
Custom elements can be styled using CSS like any other HTML element. You can define styles directly within the custom element class or use external stylesheets. Here’s an example of applying styles within the class:
The above example uses Shadow DOM to encapsulate the styles, preventing them from affecting other elements on the page.
Examples
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