title: How can I get the browser language in node.js (express.js)?
body: <p>User requests some page and I want to know (on server side) what is the language in his/her browser. So I could render template with the right messages. <br></p>
  
  <p>On client side it's easy:</p>
  
  <pre><code>var language = window.navigator.userLanguage || window.navigator.language
  </code></pre>