Angular 11 Select Dropdown Example Tutorial - Yudhy Network

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Yudhy Network - Angular 11 select dropdown example. In this tutorial, you will learn how to get selected dropdown values in angular 11 app on form submit & change event.

Angular 11 get selected dropdown value example. In this tutorial, you will learn how to get the selected dropdown value in angular 11 on form submit and change event.

As well as, this tutorial will guide you step by step on how get selected dropdown value with reactive form in angular 11 on form submit and onchange event. And also use reactive form with formGroup in angular 11 app.

Angular 11 Select dropdown example with Reactive Form

There are two way to get selected dropdown value on form submit and onchange event with reactive form in angular 11 app:

  1. Angular 11 Get Selected DropDown Value On Form Submit
  2. Angular 11 Get Selected DropDown Value On OnChange Event

Angular 11 Get Selected DropDown Value On Form Submit

Step 1 – Import Module

Then, Open app.module.ts file and import HttpClientModule, FormsModule and ReactiveFormsModule to app.module.ts file like following:

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
  
import { AppComponent } from './app.component';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
  
@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    ReactiveFormsModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }
Recommended:- Angular 11 Reactive Forms Validation Tutorial Example

Step 2 – Add Code on View File

In this step, create simple reactive form with a dropdown value with input field element. So, visit src/app/app.component.html and update the following code into it:

<div class="container">
    <h1>Angular Select Dropdown Example - tutsmake.com</h1>
        
    <form [formGroup]="form" (ngSubmit)="submit()">
           
        <div class="form-group">
            <label for="website">Website:</label>
            <select formControlName="website" class="form-control">
                <option disabled>Select Website</option>
                <option>Choose Website</option>
                <option *ngFor="let web of websiteList">{{web}}</option>
            </select>
            <div *ngIf="f.website.touched &amp;&amp; f.website.invalid" class="alert alert-danger">
                <div *ngIf="f.website.errors.required">Name is required.</div>
            </div>
        </div>
       
        <button class="btn btn-primary" type="submit" [disabled]="!form.valid">Submit</button>
    </form>
</div>
Recommended:- Angular 11 Image Upload With Preview Tutorial

Step 3 – Use Component ts File

In this step, visit the src/app directory and open app.component.ts. Then add the following code like formGroup and formControl element on component.ts file:

import { Component } from '@angular/core';
import { FormGroup, FormControl, Validators} from '@angular/forms';
  
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  websiteList: any = ['tutsmake.com', 'abc.com', 'w3alert.com']
  
  form = new FormGroup({
    website: new FormControl('', Validators.required)
  });
  
  get f(){
    return this.form.controls;
  }
  
  submit(){
    console.log(this.form.value);
  }
  
}
Recommended:- Angular 11 CRUD Application Tutorial Example

Angular 11 Get Selected DropDown Value On OnChange Event

Step 1 – Import Module

Then, Open app.module.ts file and import HttpClientModule, FormsModule and ReactiveFormsModule to app.module.ts file like following:

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
  
import { AppComponent } from './app.component';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
  
@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    ReactiveFormsModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }
Recommended:- Angular 11 Google Maps Integration Tutorial Example

Step 2 – Add Code on View File

In this step, create simple reactive form with a dropdown value with input field element. So, visit src/app/app.component.html and update the following code into it:

<div class="container">
    <h1>Angular Select Dropdown Example - Tutsmake.com</h1>
      
    <form [formGroup]="form" (ngSubmit)="submit()">
          
        <div class="form-group">
            <label for="website">Website:</label>
            <select formControlName="website" class="form-control" (change)="changeWebsite($event)">
                <option disabled>Select Website</option>
                <option>Choose Website</option>
                <option *ngFor="let web of websiteList">{{web}}</option>
            </select>
            <div *ngIf="f.website.touched &amp;&amp; f.website.invalid" class="alert alert-danger">
                <div *ngIf="f.website.errors.required">Name is required.</div>
            </div>
        </div>
      
        <button class="btn btn-primary" type="submit" [disabled]="!form.valid">Submit</button>
    </form>
</div>
Recommended:- Angular 11 Stripe Payment Checkout Gateway Example

Step 3 – Use Component ts File

In this step, visit the src/app directory and open app.component.ts. Then add the following code like formGroup and formControl element on component.ts file:

import { Component } from '@angular/core';
import { FormGroup, FormControl, Validators} from '@angular/forms';
  
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  websiteList: any = ['w3school.com', 'tutsmake.com', 'abc.com']
  
  form = new FormGroup({
    website: new FormControl('', Validators.required)
  });
  
  get f(){
    return this.form.controls;
  }
  
  submit(){
    console.log(this.form.value);
  }
  changeWebsite(e) {
    console.log(e.target.value);
  }
  
}

Start Angular App

In this step, execute the following command on terminal to start angular app:

ng serve

Please ask in the comments!

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