Demos
Input(Angular)
Calendar
Validation

Calendar Valid Dates (Angular)

In some cases, not all dates in the range are valid. To handle these situations, the Calendar control has an itemValidator property. This sample uses this property to demonstrate a common use case. It prevents users from selecting dates on weekends and holidays.

Learn about Input Controls | Calendar Validation Documentation | Calendar API Reference

This example uses Angular.

JavaScript
Angular
Vue
React
app.component.ts
index.html
app.component.html
app.data.ts
styles.css
Copy to CodeMine
import 'bootstrap.css';
import '@mescius/wijmo.styles/wijmo.css';
import './styles.css';
//
import * as wijmo from '@mescius/wijmo';
import * as input from '@mescius/wijmo.input';
//
import '@angular/compiler';
import { Component, enableProdMode, Inject, ɵresolveComponentResources } from '@angular/core';

import { BrowserModule, bootstrapApplication } from '@angular/platform-browser';
import { WjInputModule } from '@mescius/wijmo.angular2.input';
import { DataService } from './app.data';
//
@Component({
  standalone: true,
  providers: [DataService],
  imports: [WjInputModule, BrowserModule],
  selector: 'app-component',
  templateUrl: 'src/app.component.html',
})
export class AppComponent {
  private _holidays: { [key: string]: string };
  //
  constructor(@Inject(DataService) private dataService: DataService) {
    this._holidays = dataService.getHolidays();
  }
  //
  formatItem(e: input.FormatItemEventArgs) {
    // apply styles to weekends and holidays
    let weekday = e.data.getDay(),
      holiday = this._getHoliday(e.data);
    //
    wijmo.toggleClass(e.item, 'date-weekend', weekday == 0 || weekday == 6);
    wijmo.toggleClass(e.item, 'date-holiday', holiday != null);
    e.item.title = holiday || '';
  }
  //
  validator = (date: Date) => {
    return date.getDay() % 6 != 0 && !this._getHoliday(date);
  };
  //
  // gets the holiday for a given date
  private _getHoliday(date: Date) {
    let day = date.getDate(),
      month = date.getMonth() + 1,
      holiday = this._holidays[month + '/' + day];
    //
    if (!holiday) {
      let weekDay = date.getDay(),
        weekNum = Math.floor((day - 1) / 7) + 1;
      holiday = this._holidays[month + '/' + weekNum + '/' + weekDay];
    }
    //
    return holiday;
  }
}
//

//
enableProdMode();

// Resolve resources (templateUrl, styleUrls etc), After resolution all URLs have been converted into `template` strings.
ɵresolveComponentResources(fetch).then(() => {
  // Bootstrap application
  bootstrapApplication(AppComponent).catch((err) => console.error(err));
});
import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import './styles.css'; // import * as wijmo from '@mescius/wijmo'; import * as input from '@mescius/wijmo.input'; // import '@angular/compiler'; import { Component, enableProdMode, Inject, ɵresolveComponentResources } from '@angular/core'; import { BrowserModule, bootstrapApplication } from '@angular/platform-browser'; import { WjInputModule } from '@mescius/wijmo.angular2.input'; import { DataService } from './app.data'; // @Component({ standalone: true, providers: [DataService], imports: [WjInputModule, BrowserModule], selector: 'app-component', templateUrl: 'src/app.component.html', }) export class AppComponent { private _holidays: { [key: string]: string }; // constructor(@Inject(DataService) private dataService: DataService) { this._holidays = dataService.getHolidays(); } // formatItem(e: input.FormatItemEventArgs) { // apply styles to weekends and holidays let weekday = e.data.getDay(), holiday = this._getHoliday(e.data); // wijmo.toggleClass(e.item, 'date-weekend', weekday == 0 || weekday == 6); wijmo.toggleClass(e.item, 'date-holiday', holiday != null); e.item.title = holiday || ''; } // validator = (date: Date) => { return date.getDay() % 6 != 0 && !this._getHoliday(date); }; // // gets the holiday for a given date private _getHoliday(date: Date) { let day = date.getDate(), month = date.getMonth() + 1, holiday = this._holidays[month + '/' + day]; // if (!holiday) { let weekDay = date.getDay(), weekNum = Math.floor((day - 1) / 7) + 1; holiday = this._holidays[month + '/' + weekNum + '/' + weekDay]; } // return holiday; } } // // enableProdMode(); // Resolve resources (templateUrl, styleUrls etc), After resolution all URLs have been converted into `template` strings. ɵresolveComponentResources(fetch).then(() => { // Bootstrap application bootstrapApplication(AppComponent).catch((err) => console.error(err)); });
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo Calendar Validation</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- Polyfills --> <script src="node_modules/core-js/client/shim.min.js"></script> <script src="node_modules/zone.js/fesm2015/zone.min.js"></script> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.21.5/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> // workaround to load 'rxjs/operators' from the rxjs bundle System.import('rxjs').then(function (m) { System.set(SystemJS.resolveSync('rxjs/operators'), System.newModule(m.operators)); System.import('./src/app.component'); }); </script> </head> <body> <app-component></app-component> </body> </html>
<div class="container-fluid"> <wj-calendar #theCalendar (formatItem)="formatItem($event)" [itemValidator]="validator"> </wj-calendar> <div> The current date is <b>{{ theCalendar.value | date:'fullDate'}}</b>. </div> </div>
import { Injectable } from '@angular/core'; // @Injectable() export class DataService { getHolidays() { return { '1/1': 'New Year\'s Day', '6/14': 'Flag Day', '7/4': 'Independence Day', '11/11': 'Veteran\'s Day', '12/25': 'Christmas Day', '1/3/1': 'Martin Luther King\'s Birthday', // third Monday in January '2/3/1': 'Washington\'s Birthday', // third Monday in February '5/3/6': 'Armed Forces Day', // third Saturday in May '9/1/1': 'Labor Day', // first Monday in September '10/2/1': 'Columbus Day', // second Monday in October '11/4/4': 'Thanksgiving Day' // fourth Thursday in November }; } }
.wj-calendar { display: inline-block; } .wj-calendar td { padding: 4px 6px 3px 6px; } .wj-calendar .wj-header { color: white; background: #808080; } .wj-calendar .date-holiday:not(.wj-state-selected) { font-weight: bold; color: #008f22; background: #f0fff0; outline: 2pt solid #008f22; } .wj-calendar .date-weekend:not(.wj-state-selected) { background-color: #d8ffa6; } body { margin-bottom: 36px; }
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'npm:@angular/forms/fesm2022/forms.mjs', }, // packages tells the System loader how to load when no filename and/or no extension packages: { "./src": { defaultExtension: 'ts' }, "node_modules": { defaultExtension: 'js' }, wijmo: { defaultExtension: 'js', } } }); })(this);