Introduction - If you have any usage issues, please Google them yourself
from a dynamic start to use technology, a book interface class name from the database is dynamically imported, the second interface you can choose any number of books, choose to buy, according to submit button interface into the next one. this interface can be amended purchase volumes, After the changes by amending the number of buttons automatically calculate the per unit cost of goods and price and show up if they want to continue shopping, according to the upper left corner to buy goods icon to return to the front of the interface to choose commodities, Similarly selected and confirmed by entering Cart button, select merchandise completed by the lower right hand corner into the clearing house, This is the system you have to judge whether the landing, the landing was a direct interface i