Option 1: Include all translations
----------------------------------
Your app/assets/javascripts/i18n.js.coffee.erb file:
```javascript
root = exports ? this
I18n = <%= I18n.backend.send(:translations).to_json.html_safe %>
$ ->
root.I18n = I18n[$('body').data('lang')]
```
Option 2: Include a limited set of translations
-----------------------------------------------
Your app/assets/javascripts/i18n.js.coffee.erb file:
```javascript
root = exports ? this
I18n =
<%
I18n.available_locales.each do |lang|
I18n.with_locale lang do
%>
<%= lang %>:
text: "<%= I18n.t("js.text") %>"
<%
end
end
%>
$ ->
root.I18n = I18n[$('body').data('lang')]
```
Include the Selected Locale in the Rails Layout
-----------------------------------------------
The view defines the user's selected locale:
```javascript
...
```
How to Translate JavaScript Strings
-----------------------------------
We can now translate strings in a JavaScript file:
```javascript
# remember to use $(document).ready...
alert(I18n.text)
```