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Angular 9/8/7 NgModel Directive Example



Hi All,

In this example, i will show you ngmodel in angular. Here you will learn ngmodel in angular 9/8/7 example. you can understand a concept of how to use ngmodel in input field. if you want to see example of how to use ngmodel in input tag then you are a right place.

I will give you simple example of how to use ngmodel with input field in form with angular 6, angular 7, angular 8 and angular 9 application.

*ngModel will help to bind input fiel. you can create form control instance using ngModel. ngModel will help to access form field value, status and error status.

Here, i will give you two example so you can understand how to use ng model in angular and what is ng model in angular.

1) NgModel Simple Example

2) NgModel with Form Example

1) NgModel Simple Example

Before we use ng model, we must need to import "FormsModule" from '@angular/forms'; in module.ts file as bellow:

src/app/app.module.ts

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

import { BrowserModule } from '@angular/platform-browser';

import { FormsModule } from '@angular/forms';

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

@NgModule({

imports: [ BrowserModule, FormsModule ],

declarations: [ AppComponent],

bootstrap: [ AppComponent ]

})

export class AppModule { }

src/app/app.component.ts

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

@Component({

selector: 'my-app',

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

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

})

export class AppComponent {

name: string = 'Hardik';

setValueName() {

this.name = 'Savani';

}

}

src/app/app.component.html

<h1>Angular NgModel Example - HDTuto.com</h1>

<input [(ngModel)]="name" #ctrlName="ngModel" required>

<p>Value: {{ name }}</p>

<p>For Validation: {{ ctrlName.valid }}</p>

<button (click)="setValueName()">Set Value!</button>

2) NgModel with Form Example

Before we use ng model, we must need to import "FormsModule" from '@angular/forms'; in module.ts file as bellow:

src/app/app.module.ts

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

import { BrowserModule } from '@angular/platform-browser';

import { FormsModule } from '@angular/forms';

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

@NgModule({

imports: [ BrowserModule, FormsModule ],

declarations: [ AppComponent],

bootstrap: [ AppComponent ]

})

export class AppModule { }

src/app/app.component.ts

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

import {NgForm} from '@angular/forms';

@Component({

selector: 'my-app',

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

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

})

export class AppComponent {

onSubmit(myForm: NgForm) {

console.log(myForm.value);

console.log(myForm.valid);

}

}

src/app/app.component.html

<h1>Angular NgModel Example - HDTuto.com</h1>

<form #myForm="ngForm" (ngSubmit)="onSubmit(myForm)" novalidate>

<input name="name" ngModel required #name="ngModel">

<input name="email" ngModel required #email="ngModel">

<button>Submit</button>

</form>

<p>Name Field Value: {{ name.value }}</p>

<p>Name Field Is Valid?: {{ name.valid }}</p>

<p>Email Field Value: {{ email.value }}</p>

<p>Email Field is Valid?: {{ email.valid }}</p>

<p>Form value: {{ myForm.value | json }}</p>

<p>Form valid: {{ myForm.valid }}</p>

You can see bellow preview:

Output:

{name: "Hardik", email: "savanihd@gmail.com"}

true

I hope it can help you...




April 25, 2020 | Category : Angular



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