Backend API
import React, { useCallback, useRef, useState } from 'react';
import CheckBox from 'devextreme-react/check-box';
import type { CheckBoxTypes } from 'devextreme-react/check-box';
import SelectBox from 'devextreme-react/select-box';
import type { SelectBoxTypes } from 'devextreme-react/select-box';
import Button from 'devextreme-react/button';
import Calendar from 'devextreme-react/calendar';
import type { CalendarTypes, CalendarRef } from 'devextreme-react/calendar';
const selectionModes = ['single', 'multiple', 'range'];
const selectionModeLabel = { 'aria-label': 'Selection Mode' };
const isWeekend = (date: Date): boolean => {
const day = date.getDay();
return day === 0 || day === 6;
};
const isDateDisabled = ({ view, date }: CalendarTypes.DisabledDate): boolean => 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<CalendarRef>(null);
const [selectWeekOnClick, setSelectWeekOnClick] = useState<boolean>(true);
const [selectionMode, setSelectionMode] = useState<CalendarTypes.CalendarSelectionMode>('multiple');
const [minDateValue, setMinDateValue] = useState<Date | null>(null);
const [maxDateValue, setMaxDateValue] = useState<Date | null>(null);
const [weekendDisabled, setWeekendDisabled] = useState<boolean | null>(null);
const onSelectWeekOnClickChange = useCallback(({ value }: CheckBoxTypes.ValueChangedEvent): void => {
setSelectWeekOnClick(value);
}, [setSelectWeekOnClick]);
const onSelectionModeChange = useCallback(({ value }: SelectBoxTypes.ValueChangedEvent): void => {
setSelectionMode(value);
}, [setSelectionMode]);
const onMinDateChange = useCallback(({ value }: CheckBoxTypes.ValueChangedEvent): void => {
setMinDateValue(
value ? new Date(new Date().getTime() - 1000 * 60 * 60 * 24 * 3) : null,
);
}, [setMinDateValue]);
const onMaxDateChange = useCallback(({ value }: CheckBoxTypes.ValueChangedEvent): void => {
setMaxDateValue(
value ? new Date(new Date().getTime() + 1000 * 60 * 60 * 24 * 3) : null,
);
}, [setMaxDateValue]);
const onDisableWeekendChange = useCallback(({ value }: CheckBoxTypes.ValueChangedEvent): void => {
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 : undefined}
/>
</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 : undefined}
/>
</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'),
);
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/26.1.5/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="./bundle.css" />
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
<script src="bundles/vendor/react.vendor.js"></script>
<script src="./bundle.js"></script>
</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.