Select a sequence of dates in calendar in Angular Calendar component

27 Apr 20245 minutes to read

The following example demonstrates how to select the week dates of chosen date in the Calendar using values property, when isMultiSelection property is enabled. Methods of Moment.js is used in this sample for calculating the start and end of week from the selected date.

app.component.ts

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { CalendarModule } from '@syncfusion/ej2-angular-calendars'




import { Component, ViewChild } from '@angular/core';
import { CalendarComponent } from '@syncfusion/ej2-angular-calendars';
import * as moment from 'moment';

@Component({
imports: [
        
        CalendarModule //declaration of ej2-ng-calendars module into NgModule
    ],


standalone: true,
    selector: 'app-root',
    styleUrls: ['./style.css'],
    template: `
        <!-- Rendering the Calendar with Multi selection option--->
        <div class="wrapelement">
            <ejs-calendar #ejCalendar id="calendar" isMultiSelection='true' (change)="onChange($event)"></ejs-calendar>
            </div>
            <div class='btncontainer e-btn-group e-vertical'>
            <input type="radio" id="workweek" name="week" value="workweek" (click)="workWeek()" />
            <label class="e-btn" for="workweek">Work Week</label>
            <input type="radio" id="week" name="week" value="week" (click)="week()"/>
            <label class="e-btn" for="week">Week</label>
            </div>
        `
})
export class AppComponent {
    @ViewChild('ejCalendar') CalendarInstance?: CalendarComponent;
    /*selected current week dates when click the button*/
    workWeek() {
        if (this.CalendarInstance?.element.classList.contains('week')) {
            this.CalendarInstance.element.classList.remove('week')
        }
        this.CalendarInstance?.element.classList.add('workweek');
    }

    week() {
        if (this.CalendarInstance?.element.classList.contains('workweek')) {
            this.CalendarInstance.element.classList.remove('workweek')
        }
        this.CalendarInstance?.element.classList.add('week');
    }

    onChange(args: any) {
        var startOfWeek = moment(args.value).startOf('week');
        var endOfWeek: any = moment(args.value).endOf('week');
        if (this.CalendarInstance?.element.classList.contains('workweek')) {
            this.getWeekArray(startOfWeek.day(1), endOfWeek.day(5), this);
        } else if (this.CalendarInstance?.element.classList.contains("week")) {
            this.getWeekArray(startOfWeek, endOfWeek, this);
        }
    }

    getWeekArray(startOfWeek: any, endOfWeek: number, obj: this) {
        var days = [];
        var day = startOfWeek;
        while (day <= endOfWeek) {
            days.push(day.toDate());
            day = day.clone().add(1, 'd');
        }
        (obj.CalendarInstance as CalendarComponent ).values = days;
    }
}

main.ts

import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));