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こんにちは、このループ全体で蓄積されるすべての総コストをこのプログラムに追加しようとしています。ただし、プログラムは、「購入」されたすべての製品ではなく、最新のコストを出力し続けます。これが私のコードです： `

        var Customer_Name, Discount, Product="", Price, Quantity="", Cost ;
        var blanket_price = 25;
        var lotion_price = 60;
        var surfboard_price = 60;
        var sunscreen_price = 60;
        var Customer_Name = prompt("Welcome to Jersey Shore Inc.! What is your name?","Type Name Here");
        alert("Hello "+Customer_Name+", Please look through all available products and services before placing your order.");


    do
    {


    Product= prompt("What product would you like?","Type Product Name Here");
    Quantity= prompt("How much of the "+Product+" would you like?","Type Quantity Here");
    var Total_Cost;
    var SumOrderTotal=0;

         if (Product == "blanket")
            {
                alert("You received a 50% discount! Click okay to see your receipt below.");
                Total_Cost= 0.5*(Quantity*blanket_price);
                Cost=(Quantity*blanket_price);
                Discount = .50*blanket_price;
            }
            else if (Product == "lotion")
            {
                alert("You received a 50% discount! Click okay to see your receipt below.");
                Total_Cost= 0.5*(Quantity*lotion_price);
                Cost=(Quantity*lotion_price);
                Discount = .50*lotion_price;
            }
            else if (Product == "surfboard")
            {
                alert("You received a 50% discount!Click okay to see your receipt below.");
                Total_Cost= 0.5*(Quantity*surfboard_price);
                Cost=(Quantity*surfboard_price);
                Discount = .50*surfboard_price;

            }
            else if (Product == "sunscreen")
            {
                alert("You received a 50% discount! Click okay to see your receipt below.");
                Total_Cost= 0.5*(Quantity*sunscreen_price);
                Cost=(Quantity*sunscreen_price);
                Discount = .50*sunscreen_price;

            }

             if((Product=="blanket" || Product=="sunscreen" || Product=="lotion" || Product=="surfboard"))
            {

                document.write("The cost of buying " + Quantity+ " of " + Product + " is $ "+ Cost +". </br>");
                document.write("The discount for this purchase is $ "+Total_Cost+". <br/>");



            }
            else 
            {
                alert("Sorry "+Customer_Name+" you entered an invalid product.(Refer to table for our products) Please Refresh the page to reload and place a new order.");

            }
     var SumOrderTotal = Total_Cost + SumOrderTotal;
     var user_answer=confirm("Would you like to continue purchasing products?");  

    }
    while(user_answer==true);

                document.write("Thank you for placing an order with us, " +Customer_Name+". <br/>");
                document.write("Your total order cost is $"+ SumOrderTotal+ ". <br/>");

`

4

1 に答える 1

2

外SumOrderTotalに出てやってるうちに。

そのようです：

  var SumOrderTotal=0;
  do {      
    Product = prompt("...");
    Quantity = prompt("...");
    var Total_Cost;
  } while (...) {
  ...
  }

サイクルを開始するたびに0に初期化しているため（do..while）。

于 2013-03-29T07:07:21.647 に答える