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What is APP_BASE_HREF in Angular 10 ?

Last Updated : 13 Apr, 2021
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In this article, we are going to see what is APP_BASE_HREF in Angular 10 and how to use it.

APP_BASE_HREF returns a predefined DI token for the base href of the current page. The APP_BASE_HREF is the URL prefix that should be preserved.

Syntax:

 provide: APP_BASE_HREF, useValue: '/gfgapp'

Approach: 

  • In app.module.ts and APP_BASE_HREF in providers with useValue.
  • In app.component.ts store APP_BASE_HREF into any variable and use it.

 

Example 1:

app.module.ts

Javascript




import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
  
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import {APP_BASE_HREF} from '@angular/common';
  
@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule
  ],
  providers: [ {provide: APP_BASE_HREF, useValue: '/gfgapp'} ],
  bootstrap: [AppComponent]
})
export class AppModule { } 






                        










app.component.ts






Javascript















                                    




                                    

                                    




                                    




                                    

                                    

                                    
                                




















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


import {APP_BASE_HREF} from '@angular/common'; 


  


@Component({ 


  selector: 'app-root', 


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


  styleUrls: ['./app.component.css'] 


}) 


export class AppComponent { 


  title = 'demo1'; 


  constructor(@Inject(APP_BASE_HREF) private baseHref:string) { 


    var a = this.baseHref; 


    console.log(a, " is base HREF") 


  } 


    


} 



















                        







                        










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                                        What is the AppModule in Angular ?
                                    

                                

                                                        

                        

                            

                                        

                                            

                                                

                                                

                                                    
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                                                    taran910                                                

                                                

                                                

            
                                            

                                            
                                        

                                        

                                            
                                            

                                                
                                                
                                            

                                            
                                                                            

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