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Multiple Selection

This demo applies different selection modes and date availability options to the Calendar component.

Backend API
import React, { useCallback, useRef, useState } from 'react'; import CheckBox from 'devextreme-react/check-box'; import SelectBox from 'devextreme-react/select-box'; import Button from 'devextreme-react/button'; import Calendar, { CalendarTypes } from 'devextreme-react/calendar'; const selectionModes = ['single', 'multiple', 'range']; const selectionModeLabel = { 'aria-label': 'Selection Mode' }; const isWeekend = (date) => { const day = date.getDay(); return day === 0 || day === 6; }; const isDateDisabled = ({ view, date }) => view === 'month' && isWeekend(date); const now = new Date().getTime(); const msInDay = 1000 * 60 * 60 * 24; const initialValue = [now, now + msInDay]; export default function App() { const calendar = useRef(null); const [selectWeekOnClick, setSelectWeekOnClick] = useState(true); const [selectionMode, setSelectionMode] = useState<CalendarTypes.CalendarSelectionMode>('multiple'); const [minDateValue, setMinDateValue] = useState(null); const [maxDateValue, setMaxDateValue] = useState(null); const [weekendDisabled, setWeekendDisabled] = useState(null); const onSelectWeekOnClickChange = useCallback(({ value }) => { setSelectWeekOnClick(value); }, [setSelectWeekOnClick]); const onSelectionModeChange = useCallback(({ value }) => { setSelectionMode(value); }, [setSelectionMode]); const onMinDateChange = useCallback(({ value }) => { setMinDateValue( value ? new Date(new Date().getTime() - 1000 * 60 * 60 * 24 * 3) : null, ); }, [setMinDateValue]); const onMaxDateChange = useCallback(({ value }) => { setMaxDateValue( value ? new Date(new Date().getTime() + 1000 * 60 * 60 * 24 * 3) : null, ); }, [setMaxDateValue]); const onDisableWeekendChange = useCallback(({ value }) => { setWeekendDisabled(value); }, [setWeekendDisabled]); const onClearButtonClick = useCallback(() => { calendar.current.instance().clear(); }, []); return ( <div id="calendar-demo"> <div className="calendar-container"> <Calendar ref={calendar} showWeekNumbers={true} selectWeekOnClick={selectWeekOnClick} selectionMode={selectionMode} min={minDateValue} max={maxDateValue} defaultValue={initialValue} disabledDates={weekendDisabled ? isDateDisabled : null} /> </div> <div className="options"> <div className="caption">Options</div> <div className="option"> <CheckBox defaultValue={true} text="Select week on click" onValueChanged={onSelectWeekOnClickChange} /> </div> <div className="option"> <span>Selection mode</span> <SelectBox dataSource={selectionModes} value={selectionMode} inputAttr={selectionModeLabel} onValueChanged={onSelectionModeChange} /> </div> <div className="option caption"> <span>Date availability</span> </div> <div className="option"> <CheckBox defaultValue={false} text="Set minimum date" onValueChanged={onMinDateChange} /> </div> <div className="option"> <CheckBox defaultValue={false} text="Set maximum date" onValueChanged={onMaxDateChange} /> </div> <div className="option"> <CheckBox defaultValue={false} text="Disable weekends" onValueChanged={onDisableWeekendChange} /> </div> <div className="option"> <Button text="Clear value" onClick={onClearButtonClick} /> </div> </div> </div> ); }
import React, { useCallback, useRef, useState } from 'react'; import CheckBox from 'devextreme-react/check-box'; import SelectBox from 'devextreme-react/select-box'; import Button from 'devextreme-react/button'; import Calendar from 'devextreme-react/calendar'; const selectionModes = ['single', 'multiple', 'range']; const selectionModeLabel = { 'aria-label': 'Selection Mode' }; const isWeekend = (date) => { const day = date.getDay(); return day === 0 || day === 6; }; const isDateDisabled = ({ view, date }) => view === 'month' && isWeekend(date); const now = new Date().getTime(); const msInDay = 1000 * 60 * 60 * 24; const initialValue = [now, now + msInDay]; export default function App() { const calendar = useRef(null); const [selectWeekOnClick, setSelectWeekOnClick] = useState(true); const [selectionMode, setSelectionMode] = useState('multiple'); const [minDateValue, setMinDateValue] = useState(null); const [maxDateValue, setMaxDateValue] = useState(null); const [weekendDisabled, setWeekendDisabled] = useState(null); const onSelectWeekOnClickChange = useCallback( ({ value }) => { setSelectWeekOnClick(value); }, [setSelectWeekOnClick], ); const onSelectionModeChange = useCallback( ({ value }) => { setSelectionMode(value); }, [setSelectionMode], ); const onMinDateChange = useCallback( ({ value }) => { setMinDateValue(value ? new Date(new Date().getTime() - 1000 * 60 * 60 * 24 * 3) : null); }, [setMinDateValue], ); const onMaxDateChange = useCallback( ({ value }) => { setMaxDateValue(value ? new Date(new Date().getTime() + 1000 * 60 * 60 * 24 * 3) : null); }, [setMaxDateValue], ); const onDisableWeekendChange = useCallback( ({ value }) => { setWeekendDisabled(value); }, [setWeekendDisabled], ); const onClearButtonClick = useCallback(() => { calendar.current.instance().clear(); }, []); return ( <div id="calendar-demo"> <div className="calendar-container"> <Calendar ref={calendar} showWeekNumbers={true} selectWeekOnClick={selectWeekOnClick} selectionMode={selectionMode} min={minDateValue} max={maxDateValue} defaultValue={initialValue} disabledDates={weekendDisabled ? isDateDisabled : null} /> </div> <div className="options"> <div className="caption">Options</div> <div className="option"> <CheckBox defaultValue={true} text="Select week on click" onValueChanged={onSelectWeekOnClickChange} /> </div> <div className="option"> <span>Selection mode</span> <SelectBox dataSource={selectionModes} value={selectionMode} inputAttr={selectionModeLabel} onValueChanged={onSelectionModeChange} /> </div> <div className="option caption"> <span>Date availability</span> </div> <div className="option"> <CheckBox defaultValue={false} text="Set minimum date" onValueChanged={onMinDateChange} /> </div> <div className="option"> <CheckBox defaultValue={false} text="Set maximum date" onValueChanged={onMaxDateChange} /> </div> <div className="option"> <CheckBox defaultValue={false} text="Disable weekends" onValueChanged={onDisableWeekendChange} /> </div> <div className="option"> <Button text="Clear value" onClick={onClearButtonClick} /> </div> </div> </div> ); }
import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.tsx'; ReactDOM.render( <App />, document.getElementById('app'), );
window.exports = window.exports || {}; window.config = { transpiler: 'ts', typescriptOptions: { module: 'system', emitDecoratorMetadata: true, experimentalDecorators: true, jsx: 'react', }, meta: { 'react': { 'esModule': true, }, 'typescript': { 'exports': 'ts', }, 'devextreme/time_zone_utils.js': { 'esModule': true, }, 'devextreme/localization.js': { 'esModule': true, }, 'devextreme/viz/palette.js': { 'esModule': true, }, }, paths: { 'npm:': 'https://unpkg.com/', }, defaultExtension: 'js', map: { 'ts': 'npm:plugin-typescript@4.2.4/lib/plugin.js', 'typescript': 'npm:typescript@4.2.4/lib/typescript.js', 'react': 'npm:react@17.0.2/umd/react.development.js', 'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js', 'prop-types': 'npm:prop-types@15.8.1/prop-types.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', 'devextreme': 'npm:devextreme@24.1.3/cjs', 'devextreme-react': 'npm:devextreme-react@24.1.3/cjs', 'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.2.8/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@4.1.56/dist/dx-gantt.js', '@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13', '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', 'devextreme-cldr-data': 'npm:devextreme-cldr-data@1.0.3', // SystemJS plugins 'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js', // Prettier 'prettier/standalone': 'npm:prettier@2.8.8/standalone.js', 'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js', }, packages: { 'devextreme': { defaultExtension: 'js', }, 'devextreme-react': { main: 'index.js', }, 'devextreme/events/utils': { main: 'index', }, 'devextreme/localization/messages': { format: 'json', defaultExtension: 'json', }, 'devextreme/events': { main: 'index', }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js', }, }, packageConfigPaths: [ 'npm:@devextreme/*/package.json', 'npm:@devextreme/runtime@3.0.13/inferno/package.json', ], babelOptions: { sourceMaps: false, stage0: true, react: true, }, }; System.config(window.config);
import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.js'; ReactDOM.render(<App />, document.getElementById('app'));
<!DOCTYPE html> <html 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/24.1.3/css/dx.light.css" /> <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css" /> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="https://unpkg.com/core-js@2.6.12/client/shim.min.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script type="text/javascript" src="config.js"></script> <script type="text/javascript"> System.import("./index.tsx"); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"></div> </div> </body> </html>
#calendar-demo { display: flex; } .calendar-container { display: flex; flex-direction: column; flex-grow: 1; align-items: center; justify-content: center; } .caption { font-weight: 500; font-size: 18px; } .options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); } .option { margin-top: 10px; }

Selection Modes

The selected value or values are stored in the value property. The following selection modes are available:

  • 'single'
    A user can select only a single date at any given time.

  • 'multiple'
    A user can select multiple dates simultaneously.

  • 'range'
    A user can select a range of dates. The first and the last date in the range are stored in the value property.

If you enable selectWeekOnClick in 'multiple' or 'range' modes, users can select a week by clicking on the week number.

Disable and Clear Dates

Use the min and max properties to specify the range of available dates. In this demo, these properties limit the range to three days before and after the current date. Enable the "Set minimum date" and "Set maximum date" checkboxes to apply the properties.

If you need to disable specific dates, use the disabledDates property. Toggle the "Disable weekends" checkbox to see how this setting affects component behavior. You can specify either an array of predefined dates or a function that determines whether a date is available.

When using 'multiple' and 'range' selection modes, the behavior of disabled dates in the Calendar is as follows:

  • If you specify the value property programmatically, disabled dates are selected in the values array.

  • If you use the UI to change selection (click on dates or weeks, the Enter key), you cannot select disabled dates in 'multiple' mode. In 'range' mode, disabled dates cannot start or end a range, but can be included in the middle.

To clear selected values, call the Calendar clear() method.