Accessibility in Angular Toast component

24 Jan 20246 minutes to read

The Toast component followed the accessibility guidelines and standards, including ADA, Section 508, WCAG 2.2 standards, and WCAG roles that are commonly used to evaluate accessibility.

The accessibility compliance for the Toast component is outlined below.

Accessibility Criteria Compatibility
WCAG 2.2 Support Yes
Section 508 Support Yes
Screen Reader Support Yes
Right-To-Left Support Yes
Color Contrast Yes
Mobile Device Support Yes
Keyboard Navigation Support No
Accessibility Checker Validation Yes
Axe-core Accessibility Validation Yes
Yes - All features of the component meet the requirement.
Intermediate - Some features of the component do not meet the requirement.
No - The component does not meet the requirement.

WAI-ARIA attributes

The Toast component has been designed keeping in mind the WAI-ARIA specifications, by applying the prompt WAI-ARIA roles, states, and properties along with the keyboard support. Thus, making it usable for people who use assistive WAI-ARIA Accessibility supports that is achieved through the attributes.
It helps to provides information about the elements in a document for assistive technology.
The component implements the keyboard navigation support by following the WAI-ARIA practices and tested in major screen readers.

ARIA attributes

Class Description
role alert:
       Identifies the element as the container where alert content will be added or updated.		 
import { Component, ViewChild } from '@angular/core';

@Component({
    selector: 'app-root',
    template: `
        <div id="toast_target"></div>
        <button ejs-button [isPrimary]="true" (click)="btnClick($event)">Show Toast</button>
        <ejs-toast #element (created)="onCreate($event)" [position] = 'position' >
              <ng-template #title>
                  <div>Matt sent you a friend request</div>
              </ng-template>
              <ng-template #content>
                  <div>Hey, wanna dress up as wizards and ride our hoverboards?</div>
              </ng-template>
    </ejs-toast>
        `
})

export class AppComponent {
    @ViewChild('element') public element: any;
    public position = { X:'Right' };

    onCreate(args: any) {
      this.toastShow();
    }
    btnClick(args: any) {
      this.toastShow();
    }
    toastShow() {
        setTimeout(() => {
            this.element.show();
        }, 700);
    }
}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { ToastModule } from '@syncfusion/ej2-angular-notifications';
import { ButtonModule, CheckBoxModule , RadioButtonModule } from '@syncfusion/ej2-angular-buttons';
import { DropDownListModule } from '@syncfusion/ej2-angular-dropdowns';
import { DatePickerModule } from '@syncfusion/ej2-angular-calendars';
import { AppComponent } from './app.component';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, ToastModule, ButtonModule, CheckBoxModule , RadioButtonModule, DropDownListModule, DatePickerModule
    ],
    declarations: [AppComponent ],
    bootstrap: [AppComponent]
})
export class AppModule { }
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

import 'zone.js';
enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

Ensuring accessibility

The Toast component’s accessibility levels are ensured through an accessibility-checker and axe-core software tools during automated testing.

The accessibility compliance of the Toast component is shown in the following sample. Open the sample in a new window to evaluate the accessibility of the Toast component with accessibility tools.

See also