Introduction is a development platform for building web, mobile, and desktop applications using HTML, CSS, and TypeScript (JavaScript). Currently, Angular is at version 14 and Google is the main maintainer of the project. Angular is an internationalization (i18n) component library with many configuration options. @ngx-translate Prerequisites Before you start, you need to install and configure the tools: git Node.js and npm Angular CLI IDE (e.g. ) Visual Studio Code Getting started Create the Angular application Let’s create the application with the Angular base structure using the with the route file and the SCSS style format. 1. @angular/cli ng new angular-internationalization
? Would you like to add Angular routing? Yes
? Which stylesheet format would you like to use? SCSS   [ https://sass-lang.com/documentation/syntax#scss                ]
CREATE angular-internationalization/README.md (1073 bytes)
CREATE angular-internationalization/.editorconfig (274 bytes)
CREATE angular-internationalization/.gitignore (604 bytes)
CREATE angular-internationalization/angular.json (3339 bytes)
CREATE angular-internationalization/package.json (1090 bytes)
CREATE angular-internationalization/tsconfig.json (783 bytes)
CREATE angular-internationalization/.browserslistrc (703 bytes)
CREATE angular-internationalization/karma.conf.js (1445 bytes)
CREATE angular-internationalization/tsconfig.app.json (287 bytes)
CREATE angular-internationalization/tsconfig.spec.json (333 bytes)
CREATE angular-internationalization/src/favicon.ico (948 bytes)
CREATE angular-internationalization/src/index.html (313 bytes)
CREATE angular-internationalization/src/main.ts (372 bytes)
CREATE angular-internationalization/src/polyfills.ts (2820 bytes)
CREATE angular-internationalization/src/styles.scss (80 bytes)
CREATE angular-internationalization/src/test.ts (788 bytes)
CREATE angular-internationalization/src/assets/.gitkeep (0 bytes)
CREATE angular-internationalization/src/environments/environment.prod.ts (51 bytes)
CREATE angular-internationalization/src/environments/environment.ts (658 bytes)
CREATE angular-internationalization/src/app/app-routing.module.ts (245 bytes)
CREATE angular-internationalization/src/app/app.module.ts (393 bytes)
CREATE angular-internationalization/src/app/app.component.scss (0 bytes)
CREATE angular-internationalization/src/app/app.component.html (24617 bytes)
CREATE angular-internationalization/src/app/app.component.spec.ts (1139 bytes)
CREATE angular-internationalization/src/app/app.component.ts (233 bytes)
✔ Packages installed successfully. Install and configure the Bootstrap CSS framework. Do steps 2 and 3 of the post . 2. Adding the Bootstrap CSS framework to an Angular application Install the and libraries. 3. @ngx-translate/core @ngx-translate/http-loader npm install @ngx-translate/core @ngx-translate/http-loader Import the , , , and modules. Change the file and add the lines as below. 4. HttpClient HttpClientModule TranslateModule TranslateLoader TranslateHttpLoader app.module.ts import { HttpClient, HttpClientModule } from '@angular/common/http';
import { TranslateModule, TranslateLoader } from '@ngx-translate/core';
import { TranslateHttpLoader } from '@ngx-translate/http-loader';

export function createTranslateLoader(http: HttpClient) {
  return new TranslateHttpLoader(http, './assets/i18n/', '.json');
}

imports: [
  BrowserModule,
  HttpClientModule,
  TranslateModule.forRoot({
    loader: {
      provide: TranslateLoader,
      useFactory: (createTranslateLoader),
      deps: [HttpClient],
    },
    defaultLanguage: 'en-US',
  }),
  AppRoutingModule,
], Create the , , and files in the folder. 5. de-DE.json en-US.json es-ES.json fr-FR.json pt-BR.json src/assets/i18n Add the content below in the file. 6. de-DE.json {
  "hello": "Hallo, {{name}}!"
} Add the content below in the file. 7. en-US.json {
  "hello": "Hello, {{name}}!"
} Add the content below in the file. 8. es-ES.json {
  "hello": "Hola, {{name}}!"
} Add the content below in the file. 9. fr-FR.json {
  "hello": "Bonjour, {{name}}!"
} Add the content below in the file. 10. pt-BR.json {
  "hello": "Olá, {{name}}!"
} Remove the contents of the class from the file. Import the service and create the method as below. 11. AppComponent src/app/app.component.ts TranslateService changeLanguage import { Component } from '@angular/core';
import { TranslateService } from '@ngx-translate/core';

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

  constructor(public translateService: TranslateService) {
  }

  public changeLanguage(language: string): void {
    this.translateService.use(language);
  }

} Remove the contents of the file. Add the buttons as below. 12. src/app/app.component.html <div class="container-fluid py-3">
  <h1>Angular Internationalization (i18n)</h1>

  <div class="btn-group btn-group-sm py-5">
    <button type="button" class="btn btn-sm btn-outline-secondary" (click)="changeLanguage('en-US')" [class.active]="translateService.currentLang !== 'pt-BR'">English</button>
    <button type="button" class="btn btn-sm btn-outline-secondary" (click)="changeLanguage('pt-BR')" [class.active]="translateService.currentLang === 'pt-BR'">Português</button>
  </div>

  <h3>{{ "hello" | translate: { name: "Angular" } }}</h3>
</div> Run the application with the command below. 13. npm start

> angular-internationalization@1.0.0 start
> ng serve

✔ Browser application bundle generation complete.

Initial Chunk Files | Names         |      Size
vendor.js           | vendor        |   2.57 MB
styles.css          | styles        | 266.58 kB
polyfills.js        | polyfills     | 128.54 kB
scripts.js          | scripts       |  76.67 kB
main.js             | main          |  13.03 kB
runtime.js          | runtime       |   6.66 kB

                    | Initial Total |   3.05 MB

Build at: 2021-08-15T20:12:53.818Z - Hash: 9462fdcfd1de35681ab4 - Time: 11933ms

** Angular Live Development Server is listening on localhost:4200, open your browser on http://localhost:4200/ **


✔ Compiled successfully. Ready! Access the URL and check if the application is working. See the application working on and Stackblitz. 14. http://localhost:4200/ GitHub Pages The application repository is available at . https://github.com/rodrigokamada/angular-internationalization This tutorial was posted on my in portuguese. blog

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Adding the internationalization (i18n) component to an Angular application

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