Dojo 1.10.4
With CSS
HTML
<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/dojo/1.10.4/dojo/resources/dojo.css">
<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/dojo/1.10.4/dijit/themes/tundra/tundra.css">
<body class="tundra">
</body>
JavaScript
require(["dojo/_base/kernel"], function(dojo){
var currentLocale = dojo.locale;
console.log(currentLocale);
});