gistfile1.js

/**
 * Polyfill for missing window.DOMParser on CocoonJS. Once you have this file in your dependency list, 
 * all you need to do is CocoonJS check in your main application file, eg:
 * 
 * in app.js/index.js/main.js
 * 
 * var GameSpace = {};
 * window.onload = function() {
 *    if (navigator.isCocoonJS) {
 *        window.DOMParser = GameSpace.DOMishParser;
 *    }
 * ...
 * 
 * And that's it. You're more than welcome to check my blog at http://likeadev.com
 */
GameSpace.DOMishParser = function DOMishParser() {
  // Empty
};

GameSpace.DOMishParser.prototype = (function() {
  // DOMish attributes object
  function DOMishAttributes() {};
  DOMishAttributes.prototype = {
    getNamedItem: function(name) {
      return {
        nodeValue: this[name] || null
      };
    }
  };

  // The actuall data parser
  function DOMishObject(data) {
    this.attributes = this.convertContent(data);
    this.length = Object.keys(this.attributes).length;
  }

  DOMishObject.prototype = {
    documentElement: document,
    convertContent: function(obj) {
      var attributes = new DOMishAttributes(),
              prop;

      for (prop in obj) {
        if (obj[prop] !== null && typeof obj[prop] === 'object') {
          attributes[prop] = Array.isArray(obj[prop]) ?
                  obj[prop].map(makeDOMishObject) : makeDOMishObject(obj[prop]);
        } else {
          attributes[prop] = obj[prop];
        }
      }

      return attributes;
    }, 
    getElementsByTagName: function(name) {
      return this.attributes[name] ?
              Array.isArray(this.attributes[name]) ?
              this.attributes[name] : [this.attributes[name]] : [];
    },
    getAttribute: function(name) {
      return this.attributes[name];
    }
  };
  
  // DOMish object creator - exists due to the fact that it's passed 
  // by reference in DOMishObject.convertContent
  function makeDOMishObject(data) {
    return new DOMishObject(data);
  }
  
  return {
    parseFromString: function(data) {
      return makeDOMishObject(JSON.parse(data));
    }
  };
})();