Angular Checkbox Example | Angular 9/8 Checkbox Tutorial

Angular Checkbox Example | Angular 9/8 Checkbox Tutorial

In this post we will give you information about Angular Checkbox Example | Angular 9/8 Checkbox Tutorial. Hear we will give you detail about Angular Checkbox Example | Angular 9/8 Checkbox TutorialAnd how to use it also give you demo for it if it is necessary.

Here, i will show you how to works angular checkbox list example. let’s discuss about how to use checkbox in angular. We will use checkbox example in angular 8. i explained simply about angular 9 checkbox tutorial.

You can use reactive form with checkbox in angular 6, angular 7, angular 8 and angular 9 application.

In this example, i simply take website array variable with list of variable and display list of checkbox with website name. i also added on change event to get selected checkbox value for reactive form element. you can easily get all array of selected checkbox value on form submit.

So, let’s follow bellow step to create simple example. you can also see bellow screen shot for checkbox in angular app.

Step 1: Import FormsModule

If you want to create form in angular app then you need to import FormsModule from @angular/forms library. so let’s add following code to app.module.ts file.

src/app/app.module.ts

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: Form with ngModel

In this step, we will write code of html form with ngModel. so add following code to app.component.html file.

I used bootstrap class on this form. if you want to add than then follow this link too: Install Boorstrap 4 to Angular 9.

src/app/app.component.html

<div >

<h1>Angular CheckBox Example - ItSolutionStuff.com</h1>

<form [formGroup]="form" (ngSubmit)="submit()">

<div >

<label for="website">Website:</label>

<div *ngFor="let web of websiteList">

<label>

<input type="checkbox" [value]="web.id" (change)="onCheckboxChange($event)" />

{{web.name}}

</label>

</div>

</div>

<button type="submit" [disabled]="!form.valid">Submit</button>

</form>

</div>

Also see:Angular Http Post Request Example

Step 3: updated Ts File

In ts file. we will write submit() and get all input fields values. we need to import this libraries FormBuilder, FormGroup, FormControl, Validators, FormArray. so let’s add following code to app.component.ts file.

src/app/app.component.ts

import { Component } from '@angular/core';

import { FormBuilder, FormGroup, FormControl, Validators, FormArray} from '@angular/forms';

@Component({

selector: 'app-root',

templateUrl: './app.component.html',

styleUrls: ['./app.component.css']

})

export class AppComponent {

form: FormGroup;

websiteList: any = [

{ id: 1, name: 'ItSolutionStuff.com' },

{ id: 2, name: 'HDTuto.com' },

{ id: 3, name: 'NiceSnippets.com' }

];

constructor(private formBuilder: FormBuilder) {

this.form = this.formBuilder.group({

website: this.formBuilder.array([], [Validators.required])

})

}

onCheckboxChange(e) {

const website: FormArray = this.form.get('website') as FormArray;

if (e.target.checked) {

website.push(new FormControl(e.target.value));

} else {

const index = website.controls.findIndex(x => x.value === e.target.value);

website.removeAt(index);

}

}

submit(){

console.log(this.form.value);

}

}

Now you can run your application using following command:

Also see:Angular Radio Button On Change Event Example

ng serve

You can check now.

I hope it can help you…

Hope this code and post will helped you for implement Angular Checkbox Example | Angular 9/8 Checkbox Tutorial. if you need any help or any feedback give it in comment section or you have good idea about this post you can give it comment section. Your comment will help us for help you more and improve us. we will give you this type of more interesting post in featured also so, For more interesting post and code Keep reading our blogs

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