Table of Contents
What Are Web Components?
Web components are code chunks that you wrap and reuse. You can also use this on any web page. They are created with a specific purpose in mind and offer a clear division of duties. This makes them simple to maintain and reuse. Using these components, programmers may build modular, adaptable user interface pieces that can be applied to a web platform and application.
Web Component Libraries?
Web component libraries are collections of already-made, reusable components that may be applied throughout a complete web application. The goal of these libraries is to offer a standardized collection of UI components that are simple to integrate into web projects, speeding up development and enhancing uniformity throughout an application. Ext JS, Polymer, and LitElement are a few popular web component libraries that each offer a special combination of features and advantages to developers trying to speed up their online development process.
Why Build a Design System Using Web Components?
Creating a design system utilizing web components can have several advantages for web developers and designers. Designers may assure uniformity throughout a web application, increase accessibility, and speed up development by employing web components.
Easy to Customize and Standardize Styles
Using these components, you can easily customize and standardize a web application’s styles. These components can have unique styles that don’t clash with those of other components on the page. This means that by utilizing web components, developers may quickly establish a uniform look and feel throughout an application.
Supported by Modern Browsers
All major browsers, including Chrome, Opera, Safari, Firefox, and Edge, support web components. As a result, developers can use web components to create applications confidently, knowing that their code will function on all popular web browsers.
Web components can be used with any front-end web component framework or component library or even without one because they are framework-independent. Because of this, developers may more easily incorporate web components into current projects without having to rewrite their existing codebases entirely.
It is possible to make web components accessible to everyone, including people with disabilities. A web component must be keyboard focusable to be interactive, including any UI control. Web components are more accessible if they follow practices such as WAI-ARIA Authoring Practices (Web Accessibility Initiative Accessible Rich Internet Applications).
A crucial component of web components, the Shadow DOM, offers style encapsulation. By giving each component its own DOM, the Shadow DOM isolates a component’s styling from the rest of the document. Because you separate styles within a component, code maintenance and updating are simple.
How Web Components Interact With Other Elements
UI components are made to be largely independent of outside resources. They can still communicate with other page elements via APIs like the Shadow DOM, HTML templates, and custom events.
The Shadow DOM
Shadow DOM provides a method for protecting styles and DOM fragments from being impacted by other styles on the page. To do this, one can build a unique “shadow” DOM tree and tie it to the host element of the web component.
Slots offer a blank space for material that you can fill in at runtime. This allows you to alter the template of a web component. You can place any acceptable HTML content in the slots. This is usually within the shadow DOM of the web component.
The Declarative Shadow DOM
Using Web Components in Ext JS Framework
Sencha Ext JS has accessibility features that comply with the ADA Standards for Accessible Design. The Ext JS ARIA package offers tools to include accessibility support in applications so that people who use assistive technologies like screen readers to navigate the web can use those applications.
Web Component Issues
Although there have been significant advancements in Web Component development, some potential problems exist for developers.
Styling issues with components are one of the difficulties. The Shadow DOM separates styles from the outside world; however, applying styles to them might be difficult. To solve this problem, programmers should add content directly to their own element rather than using the Shadow DOM. Alternatively, they can apply scoped CSS styles using the :host class.
CSS custom properties (variables) are an additional helpful tool for decorating Web Components. Developers can define a variable in an outer container and utilize it within the custom elements since custom properties can cascade into Web Components. Another way to decorate an inner component with a part attribute is to use shadow parts.
Any <input>, <textarea>, or <select> fields in the Shadow DOM are not automatically connected with the containing form. This is another problem with Web Components. Early adopters of Web Components might include hidden fields in the page’s DOM or alter values through the FormData interface.
What Are the Advantages of Using Web Components?
Web developers can benefit from using these components in a number of ways. First and foremost, they encourage code reuse both inside and outside of a project, which streamlines the organization of the program and speeds up development. Second, components are encapsulated, which means they are separate from the rest of the application’s code. This eliminates conflicts and makes the code more straightforward, well-structured, and modular. These two characteristics boost efficiency, which is crucial in today’s cutthroat marketplaces where minimizing developer effort is crucial.
The ability to connect particular custom parts without bringing in complex dependencies gives components another edge in terms of dependencies. Due to this important distinction from well-known frameworks, components are a quick and effective solution for web development or app development.
Web components have many benefits for web development, such as reusability, encapsulation, productivity, framework independence, HTML standardization, simplicity in sharing and reuse, and lack of complex dependencies. Developers can make the program’s structure relatively simpler, and speed up the development process by employing the same component in several projects.
However, web components have significant drawbacks, such as styling issues and disregarded inputs. Maintaining styling can be challenging since some inputs in the Shadow DOM are not always connecting to the containing form. Best practices, such as avoiding the Shadow DOM, using host classes, custom properties, shadow parts, and handing in styles as attributes, are useful to overcome these difficulties.
What Is a Component in Ext JS?
In Ext JS, a component is a modular, reusable UI element that combines data, presentation, and behavior.
What Are the Features of Ext JS?
Ext JS features include robust theming, built-in UI components, a responsive layout system, powerful data management, and rich charting capabilities.
What Are the Powerful Parts of the Ext JS Framework?
The data package, component architecture, and theming system of the Ext JS framework are its most potent features.
Why Use Web UI Elements?
Web UI Elements include benefits including ease of sharing and reuse, no complex dependencies, productivity, encapsulation, and framework independence.
How Do I Use UI Components?
You can create UI components as custom elements and use them as a tag in your HTML documents to leverage UI components.