Angular JS is a JavaScript-based open-source front-end web framework introduced by Google for developing single-page applications. While learning to develop single-page Angular JS Application at Angular JS classes in Pune, focused elements are the software architecture, performance, security, testability, and maintainability of the software but not the accessibility. Besides taking it for granted the Google experts are developing high-quality Angular Components and the Angular CDK (Component Development Kit), for several tools to improve accessibility.
How Angular and Angular CDK assist developers in solving accessibility issues?
In the Angular JS accessibility starts from the UI design phase where color palates are decided to meet the accessibility standards. With the use of right typography, simple animations and user interaction can reduce the error intensity in reading and understanding the application. The angular CDK provides a mixin CDK-high-contrast to style high contrast mode users. At the Angular JS course in Pune, users will learn a variety of assistive technologies to interact with web-based software applications.
Accessibility attributes
ARIA attribute is involved to provide web-accessible semantic & the attribute binding template syntax that control the values of accessibility-related attributes.
content_copy<!– Use attr. when binding to an ARIA attribute –>
<button [attr.aria-label]=”myActionLabel”>…</button>
The syntax is used for attribute bindings. Static ARIA attributes require no extra syntax.
content_copy<!– Static ARIA attributes require no extra syntax –>
<button aria-label=”Save document”>…</button>
Angular UI components
The enrolled candidate will come to know about the Angular material library at Angular JS classes in Pune The suite of reusable UI components used with the native HTML elements with the standard interaction patterns that are important to accessibility. Live Announcement is one of the most important features provided by angular CDK in the applications for the visually impaired users on various social places.
For example:
LiveAnnouncer is used to announce messages as a standard interaction pattern for screen-reader users using an aria-live region.
For example, create a component that uses an attribute selector with a native <button> element. That applies to <button> and <a>, but can be used with many other types of element.
Example: MatButton, MatTabNav, MatTable.
Using containers for native elements
The appropriate native element requires a container element. For example, the native <input> element cannot have children, so custom text entry components need to wrap an <input> with additional elements. This makes it impossible for users of the component to set arbitrary properties and attributes to the input element by creating a container component that uses content projection to include the native control in the component’s API.
Example – MatFormField
Use of Semantic HTML
With the help of native elements, the proper semantics accessibility issues can be solved to boost-up the SEO of the application. Here semantic tags like nav, aside, main, section, fieldset, header, footer, etc. come in use instead of just using div and span.
Use the correct order for headings (h1-h6).
- Use alt attribute on img element.
- Use alt attribute on img element.
- Use button’s for clickables.
- Avoid positive tabindex .
- Add captions for video and audio.
Accessibility for interactions
Keyboard navigation is specially designed for motor disabilities and will help users navigate websites using just a keyboard. Angular CDK provides ListKeyManager for keyboard interaction using components like menus, dropdowns, selects, list boxes, etc.
Codelyzer and accessibility
In all the Angular CLI projects Codelyzer is used to detect a few common accessibility issues in Angular templates.
Conclusion
Accessibility is a must for all web applications and it should be considered in the project development lifecycle. The Angular JS training institute in Pune will make the tools available to create Accessible Components, for developers to utilize them and create accessible Angular applications.
At LotusITHub’s Angular JS classes in Pune, aspirants can learn to build the application using the trending technologies and can work on all upgraded versions. The training sessions and live project demo will help the candidates to get the live experience before entering into the actual industry. We have our branches at all the vertices of Pune, you can visit us at Karve Nagar, Warje, Narhe, Dhayari, and Kothrud. Click on the www.lotusithub.com for a brief introduction and visit us to book your seat now.
