Angular forms NgModel Directive

In this article, we are going to see what is NgModel in Angular 10 and how to use it. NgModel is used to create a top-level form group Instance, and it binds the form to the given form value.

Syntax:

<Input [(NgModel)= 'name']>

NgModule: Module used by NgModel is:

• FormsModule

Selectors:

• [ngModel]

Approach: 

• Create the Angular app to be used
• In app.component.ts make a variable that gives value to the input field.
• In app.component.html make a form and use ngModel to get the value of the input.
• Serve the angular app using ng serve to see the output.

Example 1:

app.component.ts

import { Component, Inject } from '@angular/core';
  import { PLATFORM_ID } from '@angular/core';
  import { isPlatformWorkerApp } from '@angular/common';

  @Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: [ './app.component.css' ]
  })
  export class AppComponent  {
    gfg: string = '';

  setValue() {
    this.gfg = 'GeeksforGeeks';
  }
  }

app.component.html

<h1>GeeksforGeeks</h1>

<input [(ngModel)]="gfg" #ctrl="ngModel" required>


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



<button (click)="setValue()">Set value</button>

Output:

Reference: https://angular.io/api/forms/NgModel