Two-way binding with ngModel in Angular - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to bind the input value to the component property using ngModel.

Angular

<input type="text" [(ngModel)]="[1]">

Drag options to blanks, or click blank then click option'

Avalue

Bdata

CinputValue

Dusername

Attempts:

3 left

💡 Hint

Common Mistakes

Using only [ngModel] or (ngModel) instead of [(ngModel)]

Binding to a property name that does not exist in the component

The [(ngModel)] directive binds the input's value to the component property username for two-way binding.

2fill in blank

medium

Complete the code to import the module needed for ngModel to work.

Angular

import { [1] } from '@angular/forms';

Drag options to blanks, or click blank then click option'

AFormsModule

BFormControlModule

CReactiveFormsModule

DNgModelModule

Attempts:

3 left

💡 Hint

Common Mistakes

Importing ReactiveFormsModule instead of FormsModule

Forgetting to import any forms module

The FormsModule must be imported to use ngModel for two-way binding in Angular templates.

3fill in blank

hard

Fix the error in the code to correctly bind the input to the property 'email'.

Angular

<input type="email" [1]="email">

Drag options to blanks, or click blank then click option'

A[(ngModel)]

B[ngModel]

C(ngModel)

DngModel

Attempts:

3 left

💡 Hint

Common Mistakes

Using only [ngModel] or (ngModel) instead of [(ngModel)]

Missing the parentheses or brackets

Two-way binding requires the syntax [(ngModel)] to bind and listen for changes simultaneously.

4fill in blank

hard

Fill both blanks to create a two-way binding for the property 'age' in the input element.

Angular

<input type="number" [1]="[2]">

Drag options to blanks, or click blank then click option'

A[(ngModel)]

B[ngModel]

Cage

DuserAge

Attempts:

3 left

💡 Hint

Common Mistakes

Using [ngModel] instead of [(ngModel)] for two-way binding

Binding to a property name that does not exist

The input uses [(ngModel)] for two-way binding and binds to the component property age.

5fill in blank

hard

Fill all three blanks to bind the input to 'password', import the correct module, and add the module to imports array.

Angular

import { [1] } from '@angular/forms';

@NgModule({
  imports: [[2]],
})
export class AppModule {}

// In template:
<input type="password" [3]="password">

Drag options to blanks, or click blank then click option'

AFormsModule

C[(ngModel)]

DReactiveFormsModule

Attempts:

3 left

💡 Hint

Common Mistakes

Importing ReactiveFormsModule instead of FormsModule

Forgetting to add FormsModule to imports array

Using [ngModel] or (ngModel) instead of [(ngModel)]

To use ngModel for two-way binding, you must import FormsModule, add it to the imports array, and use [(ngModel)] in the template.