DevExtreme Accessibility Compliance
DevExtreme component libraries meet a variety of WCAG and Section 508 compliance standards. To assess this demo’s accessibility level, click the Run AXE® Validation button to launch the AXE® web accessibility evaluation tool.
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The overall accessibility level of your application depends on the Calendar features used.
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Backend API
<div id="calendar-demo">
<div class="calendar-container">
<dx-calendar
#calendar
[(value)]="currentValue"
[showWeekNumbers]="false"
[disabled]="false"
[firstDayOfWeek]="0"
[zoomLevel]="zoomLevels[0]"
[cellTemplate]="cellTemplate"
weekNumberRule="auto"
>
<span
*dxTemplate="let cell of 'custom'"
[ngClass]="getCellCssClass(cell)"
>
{{ cell.text }}
</span>
</dx-calendar>
</div>
<div class="options">
<div class="caption">Options</div>
<div class="option">
<span>Zoom level</span>
<dx-select-box
[dataSource]="zoomLevels"
[(value)]="calendar.zoomLevel"
[inputAttr]="{ 'aria-label': 'Zoom Level' }"
>
</dx-select-box>
</div>
<div class="option">
<span>Selected date</span>
<dx-date-box
id="selected-date"
[(value)]="currentValue"
[inputAttr]="{ 'aria-label': 'Date' }"
>
</dx-date-box>
</div>
<div class="option">
<dx-check-box
text="Use custom cell template"
[value]="false"
(onValueChanged)="useCellTemplate($event)"
>
</dx-check-box>
</div>
<div class="option">
<dx-check-box [(value)]="calendar.disabled" text="Disable the calendar">
</dx-check-box>
</div>
<div class="caption option">
<span>Week numeration</span>
</div>
<div class="option">
<dx-check-box
text="Show week numbers"
[(value)]="calendar.showWeekNumbers"
>
</dx-check-box>
</div>
<div class="option">
<span>First day of week</span>
<dx-select-box
[dataSource]="weekDays"
[inputAttr]="{ 'aria-label': 'First Day of Week' }"
[(value)]="calendar.firstDayOfWeek"
valueExpr="id"
displayExpr="text"
></dx-select-box>
</div>
<div class="option">
<span>Week number rule</span>
<dx-select-box
[dataSource]="weekNumberRules"
[inputAttr]="{ 'aria-label': 'Week Number Rule' }"
[(value)]="calendar.weekNumberRule"
></dx-select-box>
</div>
</div>
</div>
import { Component, NgModule, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import {
DxCheckBoxModule, DxDateBoxModule, DxSelectBoxModule, DxTemplateModule,
} from 'devextreme-angular';
import { DxCalendarModule, DxCalendarTypes } from 'devextreme-angular/ui/calendar';
if (!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
templateUrl: `app/app.component.html`,
styleUrls: [`app/app.component.css`],
})
export class AppComponent {
now = new Date();
currentValue = new Date();
zoomLevels: DxCalendarTypes.CalendarZoomLevel[] = [
'month', 'year', 'decade', 'century',
];
weekDays: { id: number; text: string }[] = [
{ id: 0, text: 'Sunday' },
{ id: 1, text: 'Monday' },
{ id: 2, text: 'Tuesday' },
{ id: 3, text: 'Wednesday' },
{ id: 4, text: 'Thursday' },
{ id: 5, text: 'Friday' },
{ id: 6, text: 'Saturday' },
];
weekNumberRules: DxCalendarTypes.WeekNumberRule[] = [
'auto', 'firstDay', 'firstFourDays', 'fullWeek',
];
cellTemplate = 'cell';
holidays = [[1, 0], [4, 6], [25, 11]];
isWeekend(date: Date) {
const day = date.getDay();
return day === 0 || day === 6;
}
useCellTemplate({ value }) {
this.cellTemplate = value ? 'custom' : 'cell';
}
getCellCssClass({ date, view }) {
let cssClass = '';
if (view === 'month') {
if (!date) {
cssClass = 'week-number';
} else {
if (this.isWeekend(date)) { cssClass = 'weekend'; }
this.holidays.forEach((item) => {
if (date.getDate() === item[0] && date.getMonth() === item[1]) {
cssClass = 'holiday';
return false;
}
});
}
}
return cssClass;
}
}
@NgModule({
imports: [
BrowserModule,
DxCalendarModule,
DxCheckBoxModule,
DxDateBoxModule,
DxSelectBoxModule,
DxTemplateModule,
],
declarations: [AppComponent],
bootstrap: [AppComponent],
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #calendar-demo {
display: flex;
}
.calendar-container {
display: flex;
flex-direction: column;
flex-grow: 1;
align-items: center;
justify-content: center;
}
::ng-deep .dx-calendar-cell:not(.dx-calendar-other-month) .weekend,
::ng-deep .dx-calendar-cell:not(.dx-calendar-other-month) .holiday {
text-shadow: none;
font-weight: bold;
}
::ng-deep .dx-calendar-cell:not(.dx-calendar-other-month) .weekend {
color: #3030ff;
}
::ng-deep .dx-state-disabled.dx-calendar .dx-calendar-cell:not(.dx-calendar-other-month) .weekend {
color: #8080ff;
}
::ng-deep .dx-calendar-cell:not(.dx-calendar-other-month) .holiday {
color: #ff3030;
}
::ng-deep .dx-state-disabled.dx-calendar .dx-calendar-cell:not(.dx-calendar-other-month) .holiday {
color: #ff8080;
}
::ng-deep .dx-calendar-week-number-cell .week-number {
font-style: italic;
}
.caption {
font-weight: 500;
font-size: 18px;
}
.options {
padding: 20px;
background-color: rgba(191, 191, 191, 0.15);
}
.option {
margin-top: 10px;
}
// In real applications, you should not transpile code in the browser.
// You can see how to create your own application with Angular and DevExtreme here:
// https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/
const componentNames = [
'accordion',
'action-sheet',
'autocomplete',
'bar-gauge',
'box',
'bullet',
'button-group',
'button',
'calendar',
'chart',
'check-box',
'circular-gauge',
'color-box',
'context-menu',
'data-grid',
'date-box',
'date-range-box',
'defer-rendering',
'diagram',
'draggable',
'drawer',
'drop-down-box',
'drop-down-button',
'file-manager',
'file-uploader',
'filter-builder',
'form',
'funnel',
'gallery',
'gantt',
'html-editor',
'linear-gauge',
'list',
'load-indicator',
'load-panel',
'lookup',
'map',
'menu',
'multi-view',
'nested',
'number-box',
'pie-chart',
'pivot-grid-field-chooser',
'pivot-grid',
'polar-chart',
'popover',
'popup',
'progress-bar',
'radio-group',
'range-selector',
'range-slider',
'recurrence-editor',
'resizable',
'responsive-box',
'sankey',
'scheduler',
'scroll-view',
'select-box',
'slider',
'sortable',
'sparkline',
'speed-dial-action',
'splitter',
'switch',
'tab-panel',
'tabs',
'tag-box',
'text-area',
'text-box',
'tile-view',
'toast',
'toolbar',
'tooltip',
'tree-list',
'tree-map',
'tree-view',
'validation-group',
'validation-summary',
'validator',
'vector-map',
];
window.exports = window.exports || {};
window.config = {
transpiler: 'ts',
typescriptOptions: {
module: 'system',
emitDecoratorMetadata: true,
experimentalDecorators: true,
},
meta: {
'typescript': {
'exports': 'ts',
},
'devextreme/time_zone_utils.js': {
'esModule': true,
},
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/viz/palette.js': {
'esModule': true,
},
'@angular/platform-browser-dynamic': {
'esModule': true,
},
'@angular/platform-browser': {
'esModule': true,
},
'@angular/core': {
'esModule': true,
},
'@angular/common': {
'esModule': true,
},
'@angular/common/http': {
'esModule': true,
},
'@angular/compiler': {
'esModule': true,
},
'@angular/animations': {
'esModule': true,
},
'@angular/forms': {
'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
'bundles:': '../../../../bundles/',
},
map: {
'ts': 'npm:plugin-typescript@4.2.4/lib/plugin.js',
'typescript': 'npm:typescript@4.2.4/lib/typescript.js',
/* @angular */
'@angular/compiler': 'bundles:@angular/compiler.umd.js',
'@angular/platform-browser-dynamic': 'bundles:@angular/platform-browser-dynamic.umd.js',
'@angular/core': 'bundles:@angular/core.umd.js',
'@angular/core/primitives/signals': 'bundles:@angular/core.primitives.signals.umd.js',
'@angular/common': 'bundles:@angular/common.umd.js',
'@angular/common/http': 'bundles:@angular/common-http.umd.js',
'@angular/platform-browser': 'bundles:@angular/platform-browser.umd.js',
'@angular/platform-browser/animations': 'bundles:@angular/platform-browser.umd.js',
'@angular/forms': 'bundles:@angular/forms.umd.js',
/* devextreme */
'devextreme': 'npm:devextreme@24.1.7/cjs',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13',
'devextreme/bundles/dx.all': 'npm:devextreme@24.1.7/bundles/dx.all.js',
'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.12',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.56',
/* devextreme-angular umd maps */
'devextreme-angular': 'bundles:devextreme-angular/devextreme-angular.umd.js',
'devextreme-angular/core': 'bundles:devextreme-angular/devextreme-angular-core.umd.js',
'devextreme-angular/http': 'bundles:devextreme-angular/devextreme-angular-http.umd.js',
...componentNames.reduce((acc, name) => {
acc[`devextreme-angular/ui/${name}`] = `bundles:devextreme-angular/devextreme-angular-ui-${name}.umd.js`;
return acc;
}, {}),
'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',
'tslib': 'npm:tslib@2.6.1/tslib.js',
'rxjs': 'npm:rxjs@7.5.3/dist/bundles/rxjs.umd.js',
'rxjs/operators': 'npm:rxjs@7.5.3/dist/cjs/operators/index.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.28.1/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',
'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',
'inferno-hydrate': 'npm:inferno-hydrate@7.4.11/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js',
// Prettier
'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts',
},
'devextreme': {
defaultExtension: 'js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
'rxjs': {
defaultExtension: 'js',
},
'rxjs/operators': {
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.13/inferno/package.json',
'npm:rxjs@7.5.3/package.json',
'npm:rxjs@7.5.3/operators/package.json',
'npm:devexpress-diagram@2.2.12/package.json',
'npm:devexpress-gantt@4.1.56/package.json',
],
};
System.config(window.config);
// System.import('@angular/compiler').catch(console.error.bind(console));
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.1.7/css/dx.light.css" />
<script src="https://unpkg.com/core-js@2.6.12/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js@0.13.3/bundles/zone.umd.min.js"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.13/Reflect.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script src="config.js"></script>
<script>
System.import("app").catch(console.error.bind(console));
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<demo-app>Loading...</demo-app>
</div>
</body>
</html>
When you add a Calendar to an application, you need to specify its value in one of the following formats:
-
Date
Specifies the date directly. -
Number
Specifies the date with a timestamp (total milliseconds since 1970/01/01). -
String
Specifies the date with a string value. The UI component supports the following formats of a date string:- "yyyy-MM-dd" (for example, "2017-03-06")
- "yyyy-MM-ddTHH:mm:ss" (for example, "2017-03-27T16:54:48")
- "yyyy-MM-ddTHH:mm:ssZ" (for example, "2017-03-27T13:55:41Z")
- "yyyy-MM-ddTHH:mm:ssx" (for example, "2017-03-27T16:54:10+03")
-
Array of the formats mentioned before
Available only for 'multiple' and 'range' selection modes. The array includes all selected dates.
Specify First Day of Week and Display Week Numbers
To specify the first day of the week, assign its index (0 - for Sunday, 1 - for Monday, and so on) to the firstDayOfWeek property. You can also display a column with week numbers. For this, enable the showWeekNumbers property.
The start of the first week of the year depends on the locale. If you want to apply a specific rule, use the weekNumberRule property.
Handle Value Change
Set the onValueChanged property to handle the value change. In this demo, the DateBox and the Calendar both use this property to pass values between each other, and you can use one of these components to change the date.
Customize Cell Appearance
Use the cellTemplate property to customize cell appearance. In this demo, the following customizations are applied when you toggle the "Use custom cell template" checkbox:
-
All the weekends on the Calendar become blue.
-
All the holidays become red.
-
If a column with week numbers is shown, week numbers are italicized.
You can set your own function that changes the class of the span element that contains cell text.
Other Customizations
Set the disabled property to disable the Calendar.
To specify the initial calendar view (month, year, decade, or century), set the zoomLevel property.