java scrpit?

Question

have done this but cant get it to add up the figures i have to input into it can any one help

i also have to do this with this program please help
Run your program with each of the following inputs. (Note that
you only need to enter the figures, without any £ sign.)
• 24
• 25
• 99
• 100
For each run insert a screen shot of the browser window into the
document containing your solution.

when i run this i keep getting a question mark instead of pound sign plus it dosnt add the sums up

Answer 1

First, your first argument contains a question mark, not a pound sign.

Second, you're not adding the shipping to the order title.

Answer 2

You have an error in the script.
This line
document.write('Delivery charge is £3.00 The value of your order is ?; + orderValue + '.
');
has a missing quote. it has a ?; instead of a £.

Also you have not added the delivery charge to the order if there is a delivery charge.