Angular 12 Get Selected Value of Dropdown Tutorial

Get selected value of dropdown in angular 12 example; In this tutorial, i am going to show you step by step on how to get the selected value of dropdown on form submit and change event in angular 12 apps.

The dropdown list is an important element for form building purposes or for showing the selection list from which the user can select one or multiple values. This kind of selection list in HTML is known as the Dropdown list. It is created using <select> tag with <option> value.

Create a dropdown list with options for user to select. When user select an option from the dropdown list. An additional field will automatically appear to display the option selected by the user.

Get selected value of dropdown in angular 12 tutorial; i will provide you two solutions on how to get selected value of dropdown on form submit and on change event in angular 12 apps.

How to Get Selected Value of Dropdown in Angular 12

  1. Get Selected Value of Dropdown in Angular On Form Submit
  2. Get Selected Value of Dropdown in Angular On Change Event

Get Selected Value of Dropdown in Angular On Form Submit

Step 1 – Import Module

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 { }

Step 2 – Add Code on View File

Create 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 - laratutorials.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 && 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>

Step 3 – Use Component ts File

Go to 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 = ['laratutorials.com', 'abc.com', 'test.com']
  
  form = new FormGroup({
    website: new FormControl('', Validators.required)
  });
  
  get f(){
    return this.form.controls;
  }
  
  submit(){
    console.log(this.form.value);
  }
  
}

Get Selected Value of Dropdown in Angular On Change Event

Step 1 – Import Module

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 { }

Step 2 – Add Code on View File

Create 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 - laratutorials.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 && 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>

Step 3 – Use Component ts File

Go to 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', 'laratutorials.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

Execute the following command on terminal to start angular app:

ng serve

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