Hash Location Strategy in Angular

The Hash Location Strategy in Angular uses the hash fragment part of the URL to represent the application's state. This tutorial covers the basics of setting up and using the Hash Location Strategy effectively in your Angular applications.

Setting Up Hash Location Strategy

To set up the Hash Location Strategy, you need to configure the Angular router to use the HashLocationStrategy:

// app.module.ts
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { RouterModule, Routes, HashLocationStrategy, LocationStrategy } from '@angular/router';
import { AppComponent } from './app.component';
import { HomeComponent } from './home/home.component';
import { AboutComponent } from './about/about.component';

const routes: Routes = [
  { path: '', component: HomeComponent },
  { path: 'about', component: AboutComponent }
];

@NgModule({
  declarations: [AppComponent, HomeComponent, AboutComponent],
  imports: [BrowserModule, RouterModule.forRoot(routes)],
  providers: [{ provide: LocationStrategy, useClass: HashLocationStrategy }],
  bootstrap: [AppComponent]
})
export class AppModule { }

// home.component.ts
import { Component } from '@angular/core';

@Component({
  selector: 'app-home',
  template: '
Home Component
',
})
export class HomeComponent { }

// about.component.ts
import { Component } from '@angular/core';

@Component({
  selector: 'app-about',
  template: '
About Component
',
})
export class AboutComponent { }

// app.component.ts
import { Component } from '@angular/core';

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

// app.component.html

Using Hash Location Strategy

Once configured, the Hash Location Strategy will append a hash (#) to the URLs for your routes:

http://localhost:4200/#/about

This approach ensures that the server always receives the base URL, making it easier to manage routing on the client side without additional server configuration.

Benefits of Hash Location Strategy

• Works well with static file servers that do not support server-side routing.
• Simple to configure and use.
• Compatible with older browsers that may not support the HTML5 History API.

Key Points

Conclusion

The Hash Location Strategy in Angular provides a simple and effective way to manage routing for applications that need to work with static file servers or older browsers. By understanding and using the Hash Location Strategy effectively, you can create robust and user-friendly applications. Happy coding!