| 摘要 |
PROBLEM TO BE SOLVED: To provide a quantity button method in which a predetermined number is added to a quantity of merchandise according to a difference in a way of depressing a quantity button and in which a user can arbitrarily specify the quantity.SOLUTION: A method controls: a step for displaying a merchandise shelf page 23 having a quantity button 33; a step for adding a predetermined number to quantity by detecting depression by an individual quantity button 33; and a step for a user to operate the quantity by detecting another way of depression by the individual quantity button 33. |
