Puts text from config file into html. Just add an translate attribute followed by the keys separated by dashes,for example: <h1 translate-header-title> will get config['header']['title'].

translate.coffee

Translation = (config)->
  if typeof config != "object"
    throw 'Error, config is not an object'

  paths = []
  iterate = (obj, parent, paths)->
    for property of obj
      if obj.hasOwnProperty(property)
        if parent != ''
          new_parent = parent + '-' + property
        else
          new_parent = property
        if typeof obj[property] == "object"
          iterate(obj[property], new_parent, paths)
        else
          paths.push {key: new_parent, text: obj[property]}

  iterate(config, '', paths)
  console.log paths

  for conf in paths
    elems = document.querySelectorAll('[translate-' + conf.key + ']')
    for elem in elems
      elem.innerText = conf.text


t = new Translation({fitForKing: {title: 'FIT FOR A KING', body: 'Lorem ipsum Nisi amet aliqua nostrud Duis minim enim esse dolore minim est aliquip sint esse pariatur velit non laboris velit nulla cillum eu consequat nulla elit.'}})

translate.js

var Translation, t;

Translation = function(config) {
  var conf, elem, elems, i, iterate, len, paths, results;
  if (typeof config !== "object") {
    throw 'Error, config is not an object';
  }
  paths = [];
  iterate = function(obj, parent, paths) {
    var new_parent, property, results;
    results = [];
    for (property in obj) {
      if (obj.hasOwnProperty(property)) {
        if (parent !== '') {
          new_parent = parent + '-' + property;
        } else {
          new_parent = property;
        }
        if (typeof obj[property] === "object") {
          results.push(iterate(obj[property], new_parent, paths));
        } else {
          results.push(paths.push({
            key: new_parent,
            text: obj[property]
          }));
        }
      } else {
        results.push(void 0);
      }
    }
    return results;
  };
  iterate(config, '', paths);
  console.log(paths);
  results = [];
  for (i = 0, len = paths.length; i < len; i++) {
    conf = paths[i];
    elems = document.querySelectorAll('[translate-' + conf.key + ']');
    results.push((function() {
      var j, len1, results1;
      results1 = [];
      for (j = 0, len1 = elems.length; j < len1; j++) {
        elem = elems[j];
        results1.push(elem.innerText = conf.text);
      }
      return results1;
    })());
  }
  return results;
};

t = new Translation({
  fitForKing: {
    title: 'FIT FOR A KING of bajs',
    body: 'Lorem ipsum Nisi amet aliqua nostrud Duis minim enim esse dolore minim est aliquip sint esse pariatur velit non laboris velit nulla cillum eu consequat nulla elit.'
  }
});