Object programmingCart

Description 0 Price

display(where)

Description 1 Price

display(where)

… Description n Price

display(where)

…

Properties Method

cart.html with the following functions:

1.addcart(desc, price)

2.additem(desc, price, itemcnt)

3.viewcart()

4.prtitem(where)

5.delitem(itemcnt)

top.hidden

top.main

jackson.html with the following buttons:

• Place order

• View order

Jackson electronic example

Shopping cart logic1. cart.html is always accessible in top.hidden frame2. jackson.html is displayed in top.main frame3. When the [Place Order] button is clicked, the addcart function

is called, passing along the product description and price from the order

4. The addcart function will call the additem function to store the description, price, and current count of the item onto the shopping cart an alert message is issued as confirmation that the additem function is successfully executed

5. Steps 3 and 4 will be repeated until the user clicks the [View Order] button which triggers the viewcart function

6. The viewcart function will display the content of the cart object in top.main frame as a table by calling the display method of the cart object prtitem function with a delitem function link

banner.html with image map: banner.jpg

brkfst.html

lunch.html

dinner.html

cart.html with the following functions:

1.additem(desc, price, itemcnt)

2.delitem(itemcnt)

3.addcart(desc, price)

4.prtitem(where)

5.viewcart()

top.hidden

top.main

Kelsey’s Diner example

Shopping cart logic1. cart.html is always accessible in top.hidden frame2. Assume brkfst.html is displayed in top.main frame3. user selected an item off the menu by clicking on the Order

link which triggers the addcart function with its description and price

4. The addcart function will call the additem function to store the description, price, and current count of the item onto the shopping cart an alert message is issued as confirmation that the additem function is successfully executed

5. Steps 3 and 4 will be repeated until the user clicks the View Order link which triggers the viewcart function

6. The viewcart function will display the content of the cart object in top.main frame as a table by calling the display method of the cart object prtitem function with a delitem function link