Template Driven Forms Validation in Angular 9/8 Example

Template Driven Forms Validation in Angular 9/8 Example

In this post we will give you information about Template Driven Forms Validation in Angular 9/8 Example. Hear we will give you detail about Template Driven Forms Validation in Angular 9/8 ExampleAnd how to use it also give you demo for it if it is necessary.

Here is a angular 9/8 template driven form validation example. i would like to give you example of how to create template driven form in angular 9/8. i will give you simple example of template driven form validation in angular 9/8.

Angular 9/8 provide forms and they provide way to handle user input using ngModel, ngSubmit. Angular 8 provide Template-driven froms and using Template Driven Forms you can create very simple and basic level form.

If you have simple and basic form in your angular 8 application then i will prefer to use Template Driven Forms in angular. here i write simple example of Template Driven Forms with validation in angular 8.

You need to follow bellow step to create template driven form in angular 8.

Step 1: Install Angular App

Here, in this step you need to create new ng app for this demo. if you have already created then don’t create new angular 8 app.

ng new my-new-app

Step 2: 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 { FormsModule } from '@angular/forms';

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

@NgModule({

declarations: [

AppComponent

],

imports: [

BrowserModule,

FormsModule

],

providers: [],

bootstrap: [AppComponent]

})

export class AppModule { }

Also see:AngularJS – how to remove html tags using filter?

Step 3: 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 8.

src/app/app.component.html

<h1>Template Driven Forms Validation in Angular 8 Example - ItSolutionStuff.com</h1>

<form #contactForm="ngForm" (ngSubmit)="submit(contactForm.value)">

<div >

<label for="firstName">First Name</label>

<input required minlength="3" maxlength="10" ngModel name="firstName" type="text" #firstName="ngModel" id="firstName">

<div *ngIf="firstName.touched && !firstName.valid">

<div *ngIf="firstName.errors.required">First Name is required.</div>

<div *ngIf="firstName.errors.minlength">First Name is minimum {{ firstName.errors.minlength.requiredLength }} character.</div>

<div *ngIf="firstName.errors.maxlength">First Name is maximum 10 character.</div>

</div>

</div>

<div >

<label for="lastName">Last Name</label>

<input required ngModel name="lastName" type="text" #lastName="ngModel" id="lastName">

<div *ngIf="lastName.touched && !lastName.valid">

Last Name is required.

</div>

</div>

<div >

<label for="comment">Comment</label>

<textarea required ngModel #comment="ngModel" name="comment" id="comment" cols="30" rows="10" ></textarea>

<div *ngIf="comment.touched && !firstName.valid">

Comment is required.

</div>

</div>

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

</form>

Step 4: updated Ts File

In ts file. we will write submit() and get all input fields values. so let’s add following code to app.component.ts file.

src/app/app.component.ts

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

@Component({

selector: 'app-root',

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

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

})

export class AppComponent {

submit(form){

var firstName = form.firstName;

console.log(firstName);

var lastName = form.lastName;

console.log(lastName);

var comment = form.comment;

console.log(comment);

}

}

Now you can run your application using following command:

Also see:Angular NgClass – How to Add Dynamic Class in Angular 9/8?

ng serve

Now you can see layout as like bellow screen shot:

I hope it can help you…

Hope this code and post will helped you for implement Template Driven Forms Validation in Angular 9/8 Example. 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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