gistfile1.js

/*

var p = CObject.init().setLeft(100);

p.left; // undefined

p.getLeft(); 100

*/

var CObject = (function(){
  return { 
    init: function(options) {
      var __instance = { }, __public;

    // basic accessors
      
      // left
      function getLeft(){ 
        return __instance.left;
      }
      function setLeft(left){ 
        __instance.left = left; 
        return __public; 
      }
      // top
      function getTop(){ 
        return __instance.left; 
      }
      function setTop(left){ 
        __instance.left = left; 
        return __public; 
      }
      // width
      function getWidth(){ 
        return __instance.width; 
      }
      function setWidth(width){ 
        __instance.width = width; 
        return __public; 
      }
      // height
      function getHeight(){ 
        return __instance.height;
      }
      function setHeight(height){ 
        __instance.height = height; 
        return __public;
      }

      // public "interface" 
      return (__public = {
        getLeft:    getLeft,
        setLeft:    setLeft,
        getTop:     getTop,
        setTop:     setTop.
        getWidth:   getWidth,
        setWidth:   setWidth,
        getHeight:  getHeight,
        setHeight:  setHeight
      });
    }
  }
})();