i18next._test.js

<script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/i18next/1.6.3/i18next-1.6.3.min.js"></script>

<script>
var resources = {
  en: {
    translation: {
      "content": {
        "access": "Access"
      }
    }
  }
};
</script>

<script>
jQuery(function() {
  var lang = navigator.languages ? navigator.languages[0] :
    (navigator.language || navigator.userLanguage);

  if (lang.substr(0,2) !== 'ja') {
    i18n.init({
      resStore: resources,
      lng: lang,
      fallbackLng: 'en',
    }).done(function() {
      $('#cc-m-header-4150570958').attr('data-i18n', 'content.access');
      $('div[data-container="content"]').i18n();
    });
  }
});
</script>