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Angular Material Datepicker : Get Value

By Arvind Rai, June 24, 2020
This page will walk through creating Angular Material Datepicker and getting selected value. A Datepicker is used to enter a date either through text input or by selecting a date from a calendar. A Datepicker is made of several components and directives working together. A Datepicker is created with a text input and a calendar popup in the application. The text input connects the calendar popup using matDatepicker property. The calendar popup is created using <mat-datepicker> element and to provide toggle button for calendar popup, we need to use <mat-datepicker-toggle> element. To use Datepicker in our application, we need to import MatDatepickerModule in application module.
On this page we will create Datepicker and fetch selected value using NgModel, FormControl and FormGroup.

Technologies Used

Find the technologies being used in our example.
1. Angular 9.1.11
2. Angular Material 9.2.4
3. Node.js 12.5.0
4. NPM 6.9.0

Create Datepicker

To use Angular Datepicker, we need to import MatDatepickerModule.
import { MatDatepickerModule } from '@angular/material/datepicker'; 
We also need to import provider for DateAdapter. We can import one of the following modules i.e. MatNativeDateModule, MatMomentDateModule, or we can provide a custom implementation.
Here in our demo, we will import MatNativeDateModule.
import { MatNativeDateModule } from '@angular/material/core'; 
Datepicker is bound to a text input. So we also need to import MatInputModule.
import { MatInputModule } from '@angular/material/input'; 

Now find the code to create a Datepicker in our application.
<mat-form-field>
  <mat-label>Date of Birth</mat-label>
  <input matInput [matDatepicker]="dob">
  <mat-datepicker-toggle matSuffix [for]="dob"></mat-datepicker-toggle>
  <mat-datepicker #dob></mat-datepicker>
</mat-form-field> 
A Datepicker is a combination of text input and calendar pop-up connected with matDatepicker property on the text input.
<input matInput [matDatepicker]="dob">
<mat-datepicker #dob></mat-datepicker> 
A toggle button can be added to the Datepicker using <mat-datepicker-toggle>.
<input matInput [matDatepicker]="dob">
<mat-datepicker-toggle matSuffix [for]="dob"></mat-datepicker-toggle>
<mat-datepicker #dob></mat-datepicker> 
The button can be placed as prefix or suffix. To place it as suffix, use matSuffix attribute and for prefix, use matPrefix attribute.

Get Value with NgModel

Suppose we have following property in our component.
dateOfBirth: string; 
To get selected value of Datepicker using ngModel, find the code.
<mat-form-field>
  <mat-label>Date of Birth</mat-label>
  <input matInput [matDatepicker]="dob" [(ngModel)]="dateOfBirth">
  <mat-datepicker-toggle matSuffix [for]="dob"></mat-datepicker-toggle>
  <mat-datepicker #dob></mat-datepicker>
</mat-form-field>
{{dateOfBirth}} 
Whenever we select and change the date value, we will be able to see the changes printed by dateOfBirth.

Get Value with FormControl

Suppose we have a FormControl property in our component.
dateOfBirth = new FormControl(); 
Find the code to get selected value of Datepicker using FormControl.
<mat-form-field>
  <mat-label>Date of Birth</mat-label>
  <input matInput [matDatepicker]="dob" [formControl]="dateOfBirth">
  <mat-datepicker-toggle matSuffix [for]="dob"></mat-datepicker-toggle>
  <mat-datepicker #dob></mat-datepicker>
</mat-form-field>
{{dateOfBirth.value}} 

Get Value with FormGroup

Here we will create a reactive form with two Datepicker. We will fetch form data on form submit. Find the complete example.
student.component.html
<h3>Reactive Form Datepicker Demo</h3>
<form [formGroup]="studentForm" (ngSubmit)="onFormSubmit()">
  <mat-form-field>
    <mat-label>Student Name</mat-label>
    <input matInput formControlName="name">
  </mat-form-field>
  <br/>
  <mat-form-field>
    <mat-label>Date of Birth</mat-label>
    <input matInput [matDatepicker]="dob" formControlName="dateOfBirth">
    <mat-datepicker-toggle matSuffix [for]="dob"></mat-datepicker-toggle>
    <mat-datepicker #dob></mat-datepicker>
  </mat-form-field>
  <br/>
  <mat-form-field>
    <mat-label>Date of Admission</mat-label>
    <input matInput [matDatepicker]="admDate" formControlName="admissionDate">
    <mat-datepicker-toggle matSuffix [for]="admDate"></mat-datepicker-toggle>
    <mat-datepicker #admDate></mat-datepicker>
  </mat-form-field>
  <br/><br/>
  <button mat-raised-button>Submit</button>
</form> 
student.component.ts
import { Component, OnInit } from '@angular/core';
import { FormBuilder, FormControl } from '@angular/forms';
import { StudentService } from './student.service';

@Component({
  selector: 'app-student',
  templateUrl: './student.component.html'
})
export class StudentComponent implements OnInit {
  constructor(private formBuilder: FormBuilder, private studentService: StudentService) { }
  ngOnInit() {
  }
  studentForm = this.formBuilder.group({
    name: '',
    dateOfBirth: '',
    admissionDate: ''
  });
  onFormSubmit() {
    this.studentService.saveStudent(this.studentForm.value);
    this.studentForm.reset();
  }
} 
student.ts
export interface Student {
  name: string;  
  dateOfBirth: string;
  admissionDate: string;
} 
student.service.ts
import { Injectable } from '@angular/core';

@Injectable({
  providedIn: 'root'
})
export class StudentService {
  saveStudent(student) {
    console.log(JSON.stringify(student));
  }
} 
app.component.ts
import { Component } from '@angular/core';

@Component({
  selector: 'app-root',
  template: `
      <app-student></app-student>
  `
})
export class AppComponent {
} 
app.module.ts
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule, ReactiveFormsModule }    from '@angular/forms'; 
import { MatInputModule } from '@angular/material/input';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { MatDatepickerModule } from '@angular/material/datepicker';
import { MatNativeDateModule } from '@angular/material/core';

import { AppComponent } from './app.component';
import { StudentComponent } from './student.component';

@NgModule({
  declarations: [
    AppComponent,
    StudentComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    ReactiveFormsModule,
    BrowserAnimationsModule,
    MatInputModule, 
    MatDatepickerModule,
    MatNativeDateModule,
  ],
  providers: [],
  bootstrap: [ AppComponent ]
})
export class AppModule { } 

Run Application

To run the application, find the steps.
1. Install Angular CLI using link.
2. Install Angular Material using link.
3. Download source code using download link given below on this page.
4. Use downloaded src in your Angular CLI application.
5. Run ng serve using command prompt.
6. Access the URL http://localhost:4200
Find the print screen of the output.
Angular Material Datepicker : Get Value
Click on the toggle button of Date of Birth. The calendar popup will be displayed.
Angular Material Datepicker : Get Value

Reference

Datepicker

Download Source Code

POSTED BY
ARVIND RAI
ARVIND RAI








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