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Angular ng Bootstrap Rating Component

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  • Last Updated : 06 Jul, 2021
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Angular ng bootstrap is a bootstrap framework used with angular to create components with great styling and this framework is very easy to use and is used to make responsive websites.

In this article, we will see how to use Rating in angular ng bootstrap. Rating component is used to make a component that will be shown by using stars.

Installation syntax:

ng add @ng-bootstrap/ng-bootstrap

Approach:

  • First, install the angular ng bootstrap using the above-mentioned command.
  •  

  • Add the following script in index.html

    <link href=”https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css” rel=”stylesheet”>

  • Import ng bootstrap module in module.ts
    import { NgbModule } from '@ng-bootstrap/ng-bootstrap';
    
    imports: [
      NgbModule
    ]
    
  • In app.component.html, make a rating component.
  • Serve the app using ng serve.

Example 1: In this example, we are making a basic example of rating.

app.component.html

<ngb-rating [(rate)]="gfg"></ngb-rating>
<pre>GeeksforGeeks: <b>{{gfg}}</b></pre>

app.module.ts




import { NgModule } from '@angular/core';
  
// Importing forms module
import { FormsModule, ReactiveFormsModule  }
from '@angular/forms';
import { BrowserModule } 
from '@angular/platform-browser';
import { BrowserAnimationsModule } 
from '@angular/platform-browser/animations';
  
import { AppComponent }   from './app.component';
import { NgbModule }
from '@ng-bootstrap/ng-bootstrap';
   
@NgModule({
  bootstrap: [
    AppComponent
  ],
  declarations: [
    AppComponent
  ],
  imports: [
    FormsModule,
    BrowserModule,
    BrowserAnimationsModule,
    ReactiveFormsModule,
    NgbModule
      
  ]
})
export class AppModule { }

app.component.ts




import { Component } from '@angular/core';
  
@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    gfg = 5;
  
}

Output:

Example 2: In this example, we have set the rating to readonly.

app.component.html




<ngb-rating [(rate)]="gfg" [readonly]='true'></ngb-rating>
<pre>GeeksforGeeks: <b>{{gfg}}</b></pre>

app.module.ts




import { NgModule } from '@angular/core';
  
// Importing forms module
import { FormsModule, ReactiveFormsModule  } 
from '@angular/forms';
import { BrowserModule } 
from '@angular/platform-browser';
import { BrowserAnimationsModule } 
from '@angular/platform-browser/animations';
  
import { AppComponent }   from './app.component';
import { NgbModule }
from '@ng-bootstrap/ng-bootstrap';
   
@NgModule({
  bootstrap: [
    AppComponent
  ],
  declarations: [
    AppComponent
  ],
  imports: [
    FormsModule,
    BrowserModule,
    BrowserAnimationsModule,
    ReactiveFormsModule,
    NgbModule
      
  ]
})
export class AppModule { }

app.component.ts




import { Component } from '@angular/core';
  
@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    gfg = 5;
  
}

Output:

Reference: https://ng-bootstrap.github.io/#/components/rating/examples


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