Angular Localization in Angular Apps

Localization is the process of adapting a web application to different languages, regions, cultures, and local customs. Angular offers built-in support for localization, which means that Angular apps can be easily adapted to different locales.

Syntax

import { LOCALE_ID } from '@angular/core';

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

Example

In this example, we will create an Angular app that displays dates in different formats based on the user's locale.

import { Component } from '@angular/core';
import { registerLocaleData } from '@angular/common';
import localeFr from '@angular/common/locales/fr';
import localeDe from '@angular/common/locales/de';

registerLocaleData(localeFr);
registerLocaleData(localeDe);

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

  getFormattedDate(locale: string) {
    return this.today.toLocaleDateString(locale);
  }
}

<p>Today is {{ getFormattedDate('en-US') }}</p>
<p>Aujourd'hui est {{ getFormattedDate('fr-FR') }}</p>
<p>Heute ist {{ getFormattedDate('de-DE') }}</p>

Output

The above example will display today's date in three different formats based on the user's selected locale:

• Today is 3/3/2022
• Aujourd'hui est 03/03/2022
• Heute ist 03.03.2022

Explanation

First, we import the registerLocaleData function from @angular/common. This function is used to register new locale data to Angular. We also import the locales we want to use, in this case, French and German.

We register the new locales using the registerLocaleData function, which will make them available for use in the app.

In the AppComponent class, we define a today variable that holds the current date.

The getFormattedDate method takes a locale parameter and returns a string representing today's date in the appropriate format for that locale.

In the HTML template, we call the getFormattedDate method for three different locales and display them in the appropriate language.

Use

To use localization in an Angular app, you can follow these steps:

1. Import the necessary functions and locales from @angular/common
2. Register the new locales using the registerLocaleData function
3. Use the LOCALE_ID provider to set the default locale for the app
4. Create methods or pipes to format content based on locale
5. Use the appropriate format in the HTML templates

Important Points

• When creating a localized app, consider the date, time, currency, and number formats for each locale
• Angular provides built-in pipes like DatePipe, CurrencyPipe, and DecimalPipe that can be used to format content based on locale
• Ensure that all content, including images, audio, and video, is localized
• Use language switchers and other UI elements to allow users to select their preferred locale

Summary

Angular provides built-in support for localization, which makes it easy to create apps that can be adapted to different languages and regions. By following a few simple steps, you can create an app that displays content in the appropriate format for each locale.