gistfile1.js

var Board = function( selector ) {
  // Your board related code goes here
  // Use $elem to access the DOM element for this board
  var $elem = $( selector );
  
    $elem.droppable({
      drop: function(event, the_new_item){
        
        $(this).append(the_new_item.draggable.clone())
        $(the_new_item).remove();
      }
    });
};




var PostIt = function(element) {
  // Your post-it related code goes here 
  this.element= element
  this.drag= element.draggable({
    helper: "clone",
  });
};




$(function() {
  // This code will run when the DOM has finished loading
  board = new Board('#board');

  $('#board').on('click',function(){
    post = new PostIt($("<div class="+"post-it"+"></div>"));
    $('#board').append(post.drag)
  }); 
});