DevExtreme Angular - Localization

Localization adapts your application to linguistic and regional differences. DevExtreme allows you to localize:

DevExtreme also supports right-to-left layout.

NOTE
Refer to the Intl and Using Globalize articles if you are localizing DevExtreme ASP.NET MVC Controls.

Dictionaries

Dictionaries contain localized strings for different languages. The strings are represented by key/value pairs and are shipped as JavaScript or JSON files (depending on the package you use).

DevExpress curates the following dictionaries:

  • English (en) (default)
  • German (de)
  • Japanese (ja)
  • Russian (ru)

There are also dictionaries that the community contributes and curates. The list of dictionaries is available on GitHub.

You can find all the dictionaries on your local machine in the DevExtreme installation folder's or ZIP archive's Lib\js\localization directory. These dictionaries are also available on CDN or npm.

  • CDN or local file

    Link the required dictionaries using the <script> tag. Place the links after a link to the DevExtreme library:

    CDN
    HTML
    <head>
    <!-- ... -->
    <!-- DevExtreme library -->
    <script src="https://cdn3.devexpress.com/jslib/20.2.12/js/dx.all.js"></script>
    <!-- Dictionary files for German and Russian languages -->
    <script src="https://cdn3.devexpress.com/jslib/20.2.12/js/localization/dx.messages.de.js"></script>
    <script src="https://cdn3.devexpress.com/jslib/20.2.12/js/localization/dx.messages.ru.js"></script>
</head>
<body>
    <script>
        DevExpress.localization.locale(navigator.language);
        // ...
        // DevExtreme UI components are configured here
        // ...
    </script>
</body>

  • npm

    Include the dictionaries using the import or require statement—the statement depends on the syntax for working with modules. The following code shows ECMAScript 6 and CommonJS syntaxes:

    npm: ECMAScript 6 syntax
    JavaScript
    // ...
// Dictionaries for German and Russian languages
import deMessages from "devextreme/localization/messages/de.json";
import ruMessages from "devextreme/localization/messages/ru.json";
import { locale, loadMessages } from "devextreme/localization";

// ===== Angular ======
export class AppComponent {
    constructor() {
        loadMessages(deMessages);
        loadMessages(ruMessages);
        locale(navigator.language);
    }
}

// ===== Vue ======
export default {
    created() {
        loadMessages(deMessages);
        loadMessages(ruMessages);
        locale(navigator.language);
    }
}

// ===== React ======
class App extends React.Component {
    constructor(props) {
        super(props);
        loadMessages(deMessages);
        loadMessages(ruMessages);
        locale(navigator.language);
    }
}
    npm: CommonJS syntax
    JavaScript
    // ...
// Dictionaries for German and Russian languages
const deMessages = require('devextreme/localization/messages/de.json');
const ruMessages = require('devextreme/localization/messages/ru.json');
const localization = require('devextreme/localization');

localization.loadMessages(deMessages);
localization.loadMessages(ruMessages);
localization.locale(navigator.language);

Create a New Dictionary

To make a dictionary for a new locale:

  1. Copy one of the available dictionaries.
  2. Rename it according to the new locale.
  3. Translate the strings in it and change the locale key.

You can submit JSON dictionaries to our repository on GitHub. You should refer to our Contribution Guide before submitting content.

Add Strings to a Dictionary

In the following example, the loadMessages(messages) method adds a string with the greetingMessage key to the English and German dictionaries. The formatMessage(key, value) method then uses this key to retrieve the string from the dictionary that corresponds to the locale set by the locale(locale) method.

jQuery
JavaScript
HTML
$(function() {
    var userName = "John";
    DevExpress.localization.loadMessages({
        "en": {
            "greetingMessage": "Good morning, {0}!"
        },
        "de": {
            "greetingMessage": "Guten morgen, {0}!"
        }
    });
    DevExpress.localization.locale(navigator.language);
    $("#greeting").text(
        DevExpress.localization.formatMessage("greetingMessage", userName)
    )
})
<h1 id="greeting"></h1>
Angular
app.component.ts
app.component.html
import { Component } from '@angular/core';
import { formatMessage, loadMessages, locale } from 'devextreme/localization';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    constructor() {
        loadMessages({
            'en': {
                'greetingMessage': 'Good morning, {0}!'
            },
            'de': {
                'greetingMessage': 'Guten morgen, {0}!'
            }
        });
        locale(navigator.language);
    }

    userName: string = 'John';
    get greeting() {
        return formatMessage('greetingMessage', this.userName);
    }
}
<h1>{{ greeting }}</h1>
Vue
App.vue
<template>
    <h1>{{ greeting }}</h1>
</template>

<script>
import { formatMessage, loadMessages, locale } from 'devextreme/localization';

export default {
    created() {
        loadMessages({
            'en': {
                'greetingMessage': 'Good morning, {0}!'
            },
            'de': {
                'greetingMessage': 'Guten morgen, {0}!'
            }
        });
        locale('de');
    },
    data() {
        return {
            userName: 'John'
        }
    },
    computed: {
        greeting() {
            return formatMessage('greetingMessage', this.userName);
        }
    }
}
</script>
React
App.js
import React from 'react';

import { formatMessage, loadMessages, locale } from 'devextreme/localization';

class App extends React.Component {
    constructor(props) {
        super(props);
        this.userName = 'John';

        loadMessages({
            'en': {
                'greetingMessage': 'Good morning, {0}!'
            },
            'de': {
                'greetingMessage': 'Guten morgen, {0}!'
            }
        });

        this.greeting = formatMessage('greetingMessage', this.userName);

        locale(navigator.language);
    }

    render() {
        return (
            <h1>{ this.greeting }</h1>
        );
    }
}
export default App;

Override Strings in a Dictionary

To override a string, find its key in any dictionary and use it to specify the new string value.

In the following code, we override two strings from the English dictionary:

jQuery
JavaScript
$(function() {
    DevExpress.localization.loadMessages({
        "en": {
            "dxDataGrid-editingDeleteRow": "Remove",
            "dxDataGrid-editingUndeleteRow": "Recover"
        }
    });
});
Angular
app.component.ts
import { Component } from '@angular/core';
import { loadMessages } from 'devextreme/localization';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    constructor() {
        loadMessages({
            "en": {
                "dxDataGrid-editingDeleteRow": "Remove",
                "dxDataGrid-editingUndeleteRow": "Recover"
            }
        });
    }
}
Vue
App.vue
<template>
    <!-- ... -->
</template>

<script>
import { loadMessages } from 'devextreme/localization';

export default {
    created() {
        loadMessages({
            "en": {
                "dxDataGrid-editingDeleteRow": "Remove",
                "dxDataGrid-editingUndeleteRow": "Recover"
            }
        });
    }
}
</script>
React
App.js
import React from 'react';

import { loadMessages } from 'devextreme/localization';

class App extends React.Component {
    constructor(props) {
        super(props);
        loadMessages({
            "en": {
                "dxDataGrid-editingDeleteRow": "Remove",
                "dxDataGrid-editingUndeleteRow": "Recover"
            }
        });
    }

    render() {
        return (
            { /* ... */}
        );
    }
}
export default App;

Localize Dates, Numbers, and Currencies

DevExtreme enables you to localize date, number and currency values using Intl or Globalize. We recommend using Intl because it is supported out of the box. You can use Globalize instead if the target browser do not support Intl natively or via a polyfill, or if your app is already using Globalize.

Using Intl

Intl is the short name used to refer to a particular ECMAScript Internationalization API object. DevExtreme supports this API out of the box. All you need to do is set the locale:

jQuery
index.js
index.html
DevExpress.localization.locale(navigator.language);
// ...
// DevExtreme UI components are configured here
// ...
<head>
    <!-- ... -->
    <!-- DevExtreme library -->
    <script src="https://cdn3.devexpress.com/jslib/20.2.12/js/dx.all.js"></script>
    <!-- Dictionary files for German and Russian languages -->
    <script src="https://cdn3.devexpress.com/jslib/20.2.12/js/localization/dx.messages.de.js"></script>
    <script src="https://cdn3.devexpress.com/jslib/20.2.12/js/localization/dx.messages.ru.js"></script>
    <script src="index.js"></script>
</head>
Angular
app.component.ts
import { Component } from '@angular/core';
// Dictionaries for German and Russian languages
import deMessages from "devextreme/localization/messages/de.json";
import ruMessages from "devextreme/localization/messages/ru.json";  
import { locale, loadMessages } from "devextreme/localization";

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    constructor() {
        loadMessages(deMessages);
        loadMessages(ruMessages);
        locale(navigator.language);
    }
}
Vue
App.vue
<template>
    <!-- ... -->
</template>

<script>
// Dictionaries for German and Russian languages
import deMessages from "devextreme/localization/messages/de.json";
import ruMessages from "devextreme/localization/messages/ru.json";

import { locale, loadMessages } from "devextreme/localization";

export default {
    created() {
        loadMessages(deMessages);
        loadMessages(ruMessages);
        locale(navigator.language);
    }
}
</script>
React
App.js
// Dictionaries for German and Russian languages
import deMessages from "devextreme/localization/messages/de.json";
import ruMessages from "devextreme/localization/messages/ru.json";

import { locale, loadMessages } from "devextreme/localization";

class App extends React.Component {
    constructor(props) {
        super(props);
        loadMessages(deMessages);
        loadMessages(ruMessages);
        locale(navigator.language);
    }

    render() {
        return (
            {/* ... */}
        );
    }
}
export default App;
CommonJS syntax
JavaScript
// ...
// Dictionaries for German and Russian languages
const deMessages = require('devextreme/localization/messages/de.json');
const ruMessages = require('devextreme/localization/messages/ru.json');
const localization = require('devextreme/localization');

localization.loadMessages(deMessages);
localization.loadMessages(ruMessages);
localization.locale(navigator.language);

View Demo

Strings, numbers, dates, and currencies are now automatically localized and formatted according to the specified locale. You can also specify a currency other than USD globally (using the defaultCurrency setting) or in format definitions:

jQuery
JavaScript
$(function() {
    // Specifying a currency globally
    DevExpress.config({ defaultCurrency: "EUR" });

    $("#dataGridContainer").dxDataGrid({
        // ...
        columns: [{
            dataField: "Price",
            // Specifying a currency in a format definition
            format: {
                type: "currency",
                currency: "RUB"
            }
        }]
    });
});
Angular
app.component.ts
app.component.html
app.module.ts
import { Component } from '@angular/core';
import config from 'devextreme/core/config';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    constructor() {
        // Specifying a currency globally
        config({ defaultCurrency: 'EUR' });      
    }
}
<dx-data-grid ... >
    <dxi-column dataField="price">
        <!-- Specifying a currency in a format definition -->
        <dxo-format
            type="currency"
            currency="RUB">
        </dxo-format>
    </dxi-column>
</dx-data-grid>
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';

import { DxDataGridModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxDataGridModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }
Vue
App.vue
<template>
    <DxDataGrid ... >
        <DxColumn data-field="price">
            <!-- Specifying a currency in a format definition -->
            <DxFormat
                type="currency"
                currency="RUB"
            />
        </DxColumn>
    </DxDataGrid>
</template>

<script>
import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';

import config from 'devextreme/core/config';

import DxDataGrid, {
    DxColumn,
    DxFormat
} from 'devextreme-vue/data-grid';

export default {
    components: {
        DxDataGrid,
        DxColumn,
        DxFormat
    },
    created() {
        // Specifying a currency globally
        config({ defaultCurrency: 'EUR' });  
    }
}
</script>
React
App.js
import React from 'react';
import config from 'devextreme/core/config';
import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';

import DataGrid, {
    Column, Format
} from 'devextreme-react/data-grid';

class App extends React.Component {
    constructor(props) {
        super(props);
        // Specifying a currency globally
        config({ defaultCurrency: 'EUR' });
    }

    render() {
        return (
            <DataGrid ... >
                <Column dataField="price">
                    // Specifying a currency in a format definition
                    <Format
                        type="currency"
                        currency="RUB"
                    />
                </Column>
            </DataGrid>
        );
    }
}
export default App;

You can use structures compatible with the Intl API for value formatting. Refer to the Intl Formats section in the Value Formatting article for more information.

Using Globalize

IMPORTANT
React projects created with the Create React App do not support Globalize. DevExtreme React Template is one of such projects. Use Intl in these projects instead.

Activating Globalize in your project requires the following files:

  • Globalize library
  • CLDR library
  • CLDR data

All the components are available via CDN and npm.

  • CDN or local files

    Include the Globalize and CLDR libraries using <script> tags as shown below. In this example, German and Russian dictionaries are also included. Note that the order you include the libraries is important. Then, set the locale using the Globalize.locale() method:

    CDN
    HTML
    <head>
    <script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
    <!-- ... -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/cldrjs/0.5.0/cldr.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/cldrjs/0.5.0/cldr/event.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/cldrjs/0.5.0/cldr/supplemental.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/globalize/1.3.0/globalize.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/globalize/1.3.0/globalize/message.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/globalize/1.3.0/globalize/number.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/globalize/1.3.0/globalize/currency.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/globalize/1.3.0/globalize/date.min.js"></script>
    <!-- DevExtreme library -->
    <script src="https://cdn3.devexpress.com/jslib/20.2.12/js/dx.all.js"></script>
    <!-- Dictionary files for German and Russian languages -->
    <script src="https://cdn3.devexpress.com/jslib/20.2.12/js/localization/dx.messages.de.js"></script>
    <script src="https://cdn3.devexpress.com/jslib/20.2.12/js/localization/dx.messages.ru.js"></script>
    <!-- Common and language-specific CLDR data -->
    <script src="https://unpkg.com/devextreme-cldr-data/supplemental.js"></script>
    <script src="https://unpkg.com/devextreme-cldr-data/de.js"></script>
    <script src="https://unpkg.com/devextreme-cldr-data/ru.js"></script>
</head>
<script>
    $(function() {
        Globalize.locale(navigator.language);
    });
</script>

    View Demo

  • npm

    Install the devextreme-cldr-data and globalize packages:

    npm install --save-dev devextreme-cldr-data globalize

    Register Globalize in your project as described in the Angular, Vue, or React articles.

    Then, include Globalize, CLDR, and language-specific CLDR data using the import or require statement—the statement depends on the syntax for working with modules. The code below shows ECMAScript 6 and CommonJS syntaxes. These examples include German and Russian dictionaries.

    npm: ECMAScript 6 syntax
    JavaScript
    import "devextreme/localization/globalize/number";
import "devextreme/localization/globalize/date";
import "devextreme/localization/globalize/currency";
import "devextreme/localization/globalize/message";

// Dictionaries for German and Russian languages
import deMessages from "devextreme/localization/messages/de.json";
import ruMessages from "devextreme/localization/messages/ru.json";

// Common and language-specific CLDR JSONs
import supplemental from "devextreme-cldr-data/supplemental.json";
import deCldrData from "devextreme-cldr-data/de.json";
import ruCldrData from "devextreme-cldr-data/ru.json";

import Globalize from "globalize";

// ===== Angular ======
export class AppComponent {
    constructor() {
        Globalize.load(
            supplemental, deCldrData, ruCldrData
        );
        Globalize.loadMessages(deMessages);
        Globalize.loadMessages(ruMessages);
        Globalize.locale(navigator.language);
    }
}

// ===== Vue ======
export default {
    created() {
        Globalize.load(
            supplemental, deCldrData, ruCldrData
        );
        Globalize.loadMessages(deMessages);
        Globalize.loadMessages(ruMessages);
        Globalize.locale(navigator.language);
    }
}

// ===== React ======
class App extends React.Component {
    constructor(props) {
        super(props);
        Globalize.load(
            supplemental, deCldrData, ruCldrData
        );
        Globalize.loadMessages(deMessages);
        Globalize.loadMessages(ruMessages);
        Globalize.locale(navigator.language);
    }
}
    npm: CommonJS syntax
    JavaScript
    require('devextreme/localization/globalize/message');
require('devextreme/localization/globalize/number');
require('devextreme/localization/globalize/currency');
require('devextreme/localization/globalize/date');

// Dictionaries for German and Russian languages
const deMessages = require('devextreme/localization/messages/de.json');
const ruMessages = require('devextreme/localization/messages/ru.json');

const Globalize = require('globalize');
Globalize.load(
    // Common and language-specific CLDR JSONs
    require('devextreme-cldr-data/supplemental.json'),
    require('devextreme-cldr-data/main/de.json'),
    require('devextreme-cldr-data/main/ru.json')
);

Globalize.loadMessages(deMessages);
Globalize.loadMessages(ruMessages);

Globalize.locale(navigator.language);

    View Demo

Strings, numbers, dates, and currencies are now automatically localized and formatted according to the specified locale. You can also use a currency other than USD (see the last example in the Using Intl topic).

In addition, you can now format values using structures accepted by numberFormatter, currencyFormatter, and dateFormatter, for example:

jQuery
JavaScript
$(function() {
    $("#dataGridContainer").dxDataGrid({
        // ...
        columns: [{
            dataField: "OrderDate",
            format: { skeleton: "yMMMd" }
        }, {
            dataField: "SaleAmount",
            format: { currency: "EUR", maximumFractionDigits: 2 }
        }]
    });
});
Angular
app.component.html
app.component.ts
app.module.ts
<dx-data-grid ... >
    <dxi-column
        dataField="OrderDate"
        [format]="{ skeleton: 'yMMMd' }">
    </dxi-column>
    <dxi-column
        dataField="SaleAmount"
        [format]="{ currency: 'EUR', maximumFractionDigits: 2 }">
    </dxi-column>
</dx-data-grid>
import { Component } from '@angular/core';
// ...
// import dictionaries and localization modules here

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

import { DxDataGridModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxDataGridModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }
Vue
App.vue
<template>
    <DxDataGrid ... >
        <DxColumn
            data-field="OrderDate"
            :format="{ skeleton: 'yMMMd' }"
        />
        <DxColumn
            data-field="SaleAmount"
            :format="{ currency: 'EUR', maximumFractionDigits: 2 }"
        />
    </DxDataGrid>
</template>

<script>
import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';
// ...
// import dictionaries and localization modules here

import DxDataGrid, {
    DxColumn
} from 'devextreme-vue/data-grid';

export default {
    components: {
        DxDataGrid,
        DxColumn
    },
    // ...
}
</script>
React
App.js
import React from 'react';

import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';

import DataGrid, {
    Column
} from 'devextreme-react/data-grid';
// ...
// import dictionaries and localization modules here

class App extends React.Component {
    constructor(props) {
        super(props);
        // ...
    }

    render() {
        return (
            <DataGrid ... >
                <Column
                    dataField="price"
                    format={{ currency: 'EUR', maximumFractionDigits: 2 }}
                />
            </DataGrid>
        );
    }
}
export default App;
See Also

Localize Custom Values

DevExtreme provides an API for localizing messages, dates, and numbers in your app.

To localize a message, add it to a dictionary as shown in the Add Strings to a Dictionary article.

To localize a custom date or number, apply a format to it as shown in the Format Custom Values article.

Right-to-Left Support

Right-to-left (RTL) support allows the UI component to adapt its content to right-to-left locales.

RTL layout can be specified for an individual UI component using its rtlEnabled property:

jQuery
JavaScript
$(function() {
    $("#sliderContainer").dxSlider({
        // ...
        rtlEnabled: true
    });
});
Angular
app.component.html
app.component.ts
app.module.ts
<dx-slider ...
    [rtlEnabled]="true">
</dx-slider>
import { Component } from '@angular/core';    

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

import { DxSliderModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxSliderModule
    ],
    providers: [],
    bootstrap: [AppComponent]
})
export class AppModule { }
Vue
App.vue
<template>
    <DxSlider ...
        :rtl-enabled="true"
    />
</template>

<script>
import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';

import DxSlider from 'devextreme-vue/slider';

export default {
    components: {
        DxSlider
    }
}
</script>
React
App.js
import React from 'react';

import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';

import Slider from 'devextreme-react/slider';

class App extends React.Component {
    render() {
        return (
            <Slider ...
                rtlEnabled={true}
            />
        );
    }
}
export default App;

To apply RTL to your entire application, set the same property globally using the config() function:

jQuery
JavaScript
$(function() {
    DevExpress.config({ rtlEnabled: true });
    // ...
});
Angular
app.component.ts
import { Component } from '@angular/core';
import config from 'devextreme/core/config';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    constructor() {
        config({ rtlEnabled: true });      
    }
}
Vue
App.vue
<template>
    <!-- ... -->
</template>

<script>
import config from 'devextreme/core/config';
export default {
    // ...
    created() {
        config({ rtlEnabled: true });  
    }
}
</script>
React
App.js
import React from 'react';

import config from 'devextreme/core/config';

class App extends React.Component {
    constructor(props) {
        super(props);
        config({ rtlEnabled: true });
    }

    render() {
        return (
            // ...
        );
    }
}
export default App;
See Also