dipen Plag

/create a single variable in the global namespace
//all properties are public and can be changed - can be dangerous!!
var public_module_var = {
    price:0,




                showItems: function(){


                },





    addPrice : function(gum_type) {
     var totalprice=0;
      if (gum_type==="extra"){
         document.getElementById("item_price").innerHTML=private_module_var.brands[0].price;
document.getElementById("total_price").innerHTML=public_module_var.showItems();
       }

      else if (gum_type==="doubleMint"){
        docment.getElementById("item_price").innerHTML=private_module_var.brands[1].price;
document.getElementById("total_price").innerHTML=showItems();
     }

      else if (gum_type==="trident"){docment.getElementById("item_price").innerHTML=private_module_var.brands[2].price;
document.getElementById("total_price").innerHTML=showItems();
       }

      else if (gum_type==="bubbleGum"){docment.getElementById("item_price").innerHTML=private_module_var.brands[3].price;
document.getElementById("total_price").innerHTML=showItems();
      }

      else{
           console.log("error");}

return totalprice;
},
     clear: function(){


     },


}



var private_module_var =  (function() {

   //private variables
     var brands = [{brand : "extra",
price : 2},
{brand : "double",
price : 4},
{brand:"trident",
price :3},
{brand:"bubble",
price : 1.50}
];
// var brand = new Array("extra", "double", "trident", "bubble");
//var price = new Array(2, 4,3,1.50 );
//var options = new Array(brand, price);

  //private method
   var calculate_totalprice =  function() {
             var sum=0;
     sum+=puutsomething  ;
   };

   return {brands:brands,

   };

})();

//calling addPrice Function for Extra_gum_image
document.getElementById("Extra_gum_image").addEventListener("click",function(){public_module_var.addPrice("extra")});


//calling addPrice Function for Double_Mint_image
document.getElementById("Double_Mint_image").addEventListener("click", function(){public_module_var.addPrice("doubleMint")});

//calling addPrice Function for Trident_gum_image
document.getElementById("Trident_gum_image").addEventListener("click", function(){public_module_var.addPrice("trident")});

//calling addPrice Function for Bubble_Gum_image
document.getElementById("Bubble_Gum_image").addEventListener("click",function(){public_module_var.addPrice("bubbleGum")});
little bit improved