core-resource-app-test
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App that contains assets and scripts for the core apps
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# Introduction
[](https://travis-ci.org/i18next/i18next-xhr-backend)
[](https://coveralls.io/github/i18next/i18next-xhr-backend)
[](https://www.npmjs.com/package/i18next-xhr-backend)
[]()
[](https://david-dm.org/i18next/i18next-xhr-backend)
This is a simple i18next backend to be used in the browser. It will load resources from a backend server using xhr.
# Getting started
Source can be loaded via [npm](https://www.npmjs.com/package/i18next-xhr-backend), bower or [downloaded](https://github.com/i18next/i18next-xhr-backend/blob/master/i18nextXHRBackend.min.js) from this repo.
```
# npm package
$ npm install i18next-xhr-backend
# bower
$ bower install i18next-xhr-backend
```
Wiring up:
```js
import i18next from 'i18next';
import XHR from 'i18next-xhr-backend';
i18next
.use(XHR)
.init(i18nextOptions);
```
- As with all modules you can either pass the constructor function (class) to the i18next.use or a concrete instance.
- If you don't use a module loader it will be added to `window.i18nextXHRBackend`
## Backend Options
```js
{
// path where resources get loaded from, or a function
// returning a path:
// function(lngs, namespaces) { return customPath; }
// the returned path will interpolate lng, ns if provided like giving a static path
loadPath: '/locales/{{lng}}/{{ns}}.json',
// path to post missing resources
addPath: 'locales/add/{{lng}}/{{ns}}',
// your backend server supports multiloading
// /locales/resources.json?lng=de+en&ns=ns1+ns2
allowMultiLoading: false, // set loadPath: '/locales/resources.json?lng={{lng}}&ns={{ns}}' to adapt to multiLoading
// parse data after it has been fetched
// in example use https://www.npmjs.com/package/json5
// here it removes the letter a from the json (bad idea)
parse: function(data) { return data.replace(/a/g, ''); },
// allow cross domain requests
crossDomain: false,
// allow credentials on cross domain requests
withCredentials: false,
// define a custom xhr function
// can be used to support XDomainRequest in IE 8 and 9
ajax: function (url, options, callback, data) {},
// adds parameters to resource URL. 'example.com' -> 'example.com?v=1.3.5'
queryStringParams: { v: '1.3.5' }
}
```
Options can be passed in:
**preferred** - by setting options.backend in i18next.init:
```js
import i18next from 'i18next';
import XHR from 'i18next-xhr-backend';
i18next
.use(XHR)
.init({
backend: options
});
```
on construction:
```js
import XHR from 'i18next-xhr-backend';
const xhr = new XHR(null, options);
```
via calling init:
```js
import XHR from 'i18next-xhr-backend';
const xhr = new XHR();
xhr.init(options);
```
### Usage with webpack
To use with webpack, install [bundle-loader](https://github.com/webpack/bundle-loader) and [json-loader](https://github.com/webpack/json-loader).
Define a custom xhr function, webpack's bundle loader will load the translations for you.
```js
function loadLocales(url, options, callback, data) {
try {
let waitForLocale = require('bundle!./locales/'+url+'.json');
waitForLocale((locale) => {
callback(locale, {status: '200'});
})
} catch (e) {
callback(null, {status: '404'});
}
}
i18next
.use(XHR)
.init({
backend: {
loadPath: '{{lng}}',
parse: (data) => data,
ajax: loadLocales
}
}, (err, t) => {
// ...
});
```
## TypeScript definitions
- Install from `@types` (for TypeScript v2 and later):
npm install --save-dev @types/i18next-xhr-backend
- Install from `typings`:
typings install --save --global dt~i18next-xhr-backend