asked on

Setting Up Cookies For Shopping Cart

All right here is the problem.

Trying to creat a shopping page that has three products.
I want the cookies to store the product name and a running quantity.
On "Add Item" button, it needs to check if the cookie is there.
If cookie is not there, create cookie with a value (quantity) of 1.
If cookie is present and 1 to current value (quantity).

I am having two problems with current code.

Problem 1:
The code I am using now writes over present cookie value with new value.
Ex.
Click on "Product 1". Cookie is added for Product 1 with quanity of 1.
Next.
Click on "Product 2". Cookie is overwritten. Product 1 information is lost. Prosuct 2 information is written.

Problem 2:
Values (Quantity) is added together as strings instead on integers. I have tried parseInt() and parseFloat() in various places with no luck.
Ex.
Click on "Product 1". Cookie is added for Product 1 with quanity of 1.
Next.
Click on "Product 1" again. Cookie is added for Product 1 with quanity of 11.
Next.
Click on "Product 1" again. Cookie is added for Product 1 with quanity of 111.
Etc.

Here is the HTML page and code I am using:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
<head>
      <title>JavaScript Cookies - Widgets</title>
      <SCRIPT LANGUAGE="JavaScript">
      var date = new Date("December 31, 2023");
var cookieDate = date.toGMTString();

      function addItem(itemName) {
                  var cookieContent;
                  var counterValue = readCookie(itemName);
                  //this is where I have been trying the parseInt, parseFloat
                  quantity = counterValue;
                  quantity = quantity + 1;
            // I had to do this because on every click of the same item it would add a : Ex. Product1::11
                  cookieContent = itemName + ":";
                  document.cookie = cookieContent + quantity + ";expires=" + cookieDate + ";";

                  function readCookie(itemName) {
                        var docCookies = document.cookie;
                        var startIndex = docCookies.indexOf(itemName);
                              if (startIndex == -1) {
                              cookieContent = itemName + ":";
                  document.cookie = cookieContent + "1" + ";expires=" + cookieDate + ";";
                              };
                        startIndex += itemName.length + 1;
                        var endIndex = docCookies.indexOf(";",startIndex);
                        if (endIndex == -1) endIndex = docCookies.length;
                        var cookieValue = docCookies.substring(startIndex, endIndex);
                        return cookieValue;
            }
}
</SCRIPT>

</head>

<body>
<h3>Product 1</h3>
<p>Price - $150.00, Shipping - $10.95</p>
<a href='javascript:addItem("Product1")'>Put In Shopping Cart</a><br>
<br>

<h3>Product 2</h3>
<p> Price - $150.00, Shipping - $ 10.95</p>
<a href='javascript:addItem("Product2")'>Put In Shopping Cart</a> <br>
<br>

<h3>Product 3</h3>
<p>Price - $150.00, Shipping - $10.95</p>
<p><a href='javascript:addItem("Product3")'>Put In Shopping Cart</a> </p>
<p><a href="javascript:alert(document.cookie);">View Cookies</a></p>
</body>
</html>

I want to write the cookie something like this:

Product1:2;Product2:1;Product3:4;

Meaning: Product1 has quantity of 2; Product2 has quantity of 1; Product3 has quantity of 4

On the cart page I will try and parse out each item with a quantity value for each and then assign price * quanity for a total.

Sorry, all I have to give is 125 points.

Thanks in advance for any help.

ASKER CERTIFIED SOLUTION

apparition

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apparition

ooops made a mistake at the bottom HTML for product 1

<h3>Product 1</h3>
<p>Price - $150.00, Shipping - $10.95</p>
<a href='javascript:addItem("Product1")'>Put In Shopping Cart</a><br>
<br>

It was
<h3>Product 1</h3>
<p>Price - $150.00, Shipping - $10.95</p>
<a href='javascript:addItem("Product2")'>Put In Shopping Cart</a><br>
<br>

brianindium

ASKER

You are a pimp and a scholar.

Thanks.