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# introduction
The module of node-i18n-iso-countries is awesome except that it does not support the traditional chinese. So, I forked the code from [the original repo](https://github.com/michaelwittig/node-i18n-iso-countries) and made minor modification to support the traditional chinese.

# i18n-iso-countries

> Version 5 drops support for node 6 and 7!

i18n for ISO 3166-1 country codes. We support Alpha-2, Alpha-3 and Numeric codes from <http://en.wikipedia.org/wiki/ISO_3166-1#Officially_assigned_code_elements>

## Installing

Install it using npm: `npm install i18n-iso-countries`

```javascript
var countries = require("i18n-iso-countries");
```

If you use `i18n-iso-countries` with Node.js your are done. If you use the package in a browser environment you also have to register the languages you want to use to minimize file size.

```javascript
// Support french & english languages.
countries.registerLocale(require("i18n-iso-countries/langs/en.json"));
countries.registerLocale(require("i18n-iso-countries/langs/fr.json"));
```

## Code to Country

### Get the name of a country by its ISO 3166-1 Alpha-2, Alpha-3 or Numeric code

```javascript
var countries = require("i18n-iso-countries");
// in a browser environment: countries.registerLocale(require("i18n-iso-countries/langs/en.json"));
console.log("US (Alpha-2) => " + countries.getName("US", "en")); // United States of America
console.log("US (Alpha-2) => " + countries.getName("US", "de")); // Vereinigte Staaten von Amerika
console.log("USA (Alpha-3) => " + countries.getName("USA", "en")); // United States of America
console.log("USA (Numeric) => " + countries.getName("840", "en")); // United States of America
```

### Get all names by their ISO 3166-1 Alpha-2 code

```javascript
var countries = require("i18n-iso-countries");
// in a browser environment: countries.registerLocale(require("i18n-iso-countries/langs/en.json"));
console.log(countries.getNames("en")); // { 'AF': 'Afghanistan', 'AL': 'Albania', [...], 'ZM': 'Zambia', 'ZW': 'Zimbabwe' }
```

### Supported languages (ISO 639-1)

-   `ar`: Arabic
-   `az`: Azerbaijani
-   `be`: Belorussian
-   `bg`: Bulgarian
-   `bs`: Bosnian
-   `ca`: Catalan
-   `cs`: Czech
-   `da`: Danish
-   `de`: German
-   `en`: English
-   `es`: Spanish
-   `et`: Estonian
-   `fa`: Persian
-   `fi`: Finnish
-   `fr`: French
-   `gl`: Galician
-   `el`: Greek
-   `he`: Hebrew
-   `hr`: Croatian
-   `hu`: Hungarian
-   `hy`: Armenian
-   `it`: Italian
-   `id`: Indonesian
-   `ja`: Japanese
-   `ka`: Georgian
-   `kk`: Kazakh
-   `ko`: Korean
-   `ky`: Kyrgyz
-   `lt`: Lithuanian
-   `lv`: Latvian
-   `mk`: Macedonian
-   `mn`: Mongolian
-   `ms`: Malay
-   `nb`: Norwegian Bokmål
-   `nl`: Dutch
-   `nn`: Norwegian Nynorsk
-   `pl`: Polish
-   `pt`: Portuguese
-   `ro`: Romanian
-   `ru`: Russian
-   `sk`: Slovak
-   `sl`: Slovene
-   `sr`: Serbian
-   `sv`: Swedish
-   `th`: Thai
-   `tr`: Turkish
-   `uk`: Ukrainian
-   `ur`: Urdu
-   `uz`: Uzbek
-   `zh`: Chinese (Simplified)
-   `tw`: Chinese (Traditional)
-   `vi`: Vietnamese

[List of ISO 639-1 codes](https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes)

### Country to Code

```javascript
var countries = require("i18n-iso-countries");
// in a browser environment: countries.registerLocale(require("i18n-iso-countries/langs/en.json"));
console.log("United States of America => " + countries.getAlpha2Code('United States of America', 'en'));
// United States of America => US

console.log("United States of America => " + countries.getAlpha3Code('United States of America', 'en'));
// United States of America => USA
```

## Codes

### Convert Alpha-3 to Alpha-2 code

```javascript
var countries = require("i18n-iso-countries");
// in a browser environment: countries.registerLocale(require("i18n-iso-countries/langs/en.json"));
console.log("USA (Alpha-3) => " + countries.alpha3ToAlpha2("USA") + " (Alpha-2)");
// USA (Alpha-3) => US (Alpha-2)
```

### Convert Numeric to Alpha-2 code

```javascript
var countries = require("i18n-iso-countries");
// in a browser environment: countries.registerLocale(require("i18n-iso-countries/langs/en.json"));
console.log("840 (Numeric) => " + countries.numericToAlpha2("840") + " (Alpha-2)");
// 840 (Numeric) => US (Alpha-2)
```

### Convert Alpha-2 to Alpha-3 code

```javascript
var countries = require("i18n-iso-countries");
// in a browser environment: countries.registerLocale(require("i18n-iso-countries/langs/en.json"));
console.log("DE (Alpha-2) => " + countries.alpha2ToAlpha3("DE") + " (Alpha-3)");
// DE (Alpha-2) => DEU (Alpha-3)
```

### Convert Numeric to Alpha-3 code

```javascript
var countries = require("i18n-iso-countries");
// in a browser environment: countries.registerLocale(require("i18n-iso-countries/langs/en.json"));
console.log("840 (Numeric) => " + countries.numericToAlpha3("840") + " (Alpha-3)");
// 840 (Numeric) => USA (Alpha-3)
```

### Convert Alpha-3 to Numeric code

```javascript
var countries = require("i18n-iso-countries");
// in a browser environment: countries.registerLocale(require("i18n-iso-countries/langs/en.json"));
console.log(countries.alpha3ToNumeric("SWE"));
// 752
```

### Convert Alpha-2 to Numeric code

```javascript
var countries = require("i18n-iso-countries");
// in a browser environment: countries.registerLocale(require("i18n-iso-countries/langs/en.json"));
console.log(countries.alpha2ToNumeric("SE"));
// 752
```

### Get all Alpha-2 codes

```javascript
var countries = require("i18n-iso-countries");
// in a browser environment: countries.registerLocale(require("i18n-iso-countries/langs/en.json"));
console.log(countries.getAlpha2Codes());
// { 'AF': 'AFG', 'AX': 'ALA', [...], 'ZM': 'ZMB', 'ZW': 'ZWE' }
```

### Get all Alpha-3 codes

```javascript
var countries = require("i18n-iso-countries");
// in a browser environment: countries.registerLocale(require("i18n-iso-countries/langs/en.json"));
console.log(countries.getAlpha3Codes());
// { 'AFG': 'AF', 'ALA': 'AX', [...], 'ZMB': 'ZM', 'ZWE': 'ZW' }
```

### Get all Numeric codes

```javascript
var countries = require("i18n-iso-countries");
// in a browser environment: countries.registerLocale(require("i18n-iso-countries/langs/en.json"));
console.log(countries.getNumericCodes());
// { '004': 'AF', '008': 'AL', [...], '887': 'YE', '894': 'ZM' }
```

### Validate country code

```javascript
var countries = require("i18n-iso-countries");
// in a browser environment: countries.registerLocale(require("i18n-iso-countries/langs/en.json"));
console.log(countries.isValid("US"), countries.isValid("USA"), countries.isValid("XX"));
// true, true, false
```

## Contribution

To add a language:

-   add a json file under langs/
-   add the language to the `data` object in entry-node.js at the top
-   add language to section **Supported languages** in README.md
-   add language to keywords in package.json
-   run `npm install && make test` to make sure that tests are passing
-   open a PR on GitHub

You can check codes here: https://www.iso.org/obp/ui/#home