my sums are not adding up? please help.

[Guest]

if the values of the following are already set from an order form in another
iframe.

cKiwiFruit=18
KiwiFruit=17


i need a line to calculate to cost of the special offer, kiwi's are 18pence
each but buying 7 you only pay £1.00. so buying 17 would be 2 lots of £1.00
for the first 14 and then 18pence each for the remander (3 * 18pence) a
total of £1.54pence.

total=eval(((int)(form.KiwiFruit.value/7)*100)+(((int)(form.KiwiFruit.value/7)*7)*cKiwiFruit));


thanks

 

[Steve Easton]

You need to remember the "My Dear Aunt Sally" rule" Multiply, divide, add and subtract.

so try:
subtotal1 = eval((int)(form.KiwiFruit.value/7)*100;

subtotal2 = eval (((int)(form.KiwiFruit.value/7)*7)*cKiwiFruit));

total = subtotal1 + subtotal2;


--
Steve Easton
Microsoft MVP FrontPage
95isalive
This site is best viewed............
........................with a computer

 

[Guest]

sorry did not work.

any other ideas please.

You need to remember the "My Dear Aunt Sally" rule" Multiply, divide, add
and subtract.

so try:
subtotal1 = eval((int)(form.KiwiFruit.value/7)*100;

subtotal2 = eval (((int)(form.KiwiFruit.value/7)*7)*cKiwiFruit));

total = subtotal1 + subtotal2;


--
Steve Easton
Microsoft MVP FrontPage
95isalive
This site is best viewed............
.......................with a computer

 

[Guest]

does the (int) do what i think it does, rounds the figure down to
the nearest full number. (no decimal)

 

[Jon Spivey]

Hi,

The sums in your question don't add up - 17 would be £2.54 There's no
int in javascript., try it like this

NumberOfKiwis = 17;
var a = Math.floor(NumberOfKiwis/7);
var Total = a * 100 + ((NumberOfKiwis-(a * 7)) * 18);
alert(Total) // 254

You'd probably want to divide total by 100 to get pounds and pence then
stick a £ sign in front of it

--
Cheers,
Jon
Microsoft MVP


total = Math.Floor(NumberOfKiwis/7) * 100 +

 

[Guest]

thank you, it work, perfectly.

cheers.

Hi,

The sums in your question don't add up - 17 would be £2.54 There's no
int in javascript., try it like this

NumberOfKiwis = 17;
var a = Math.floor(NumberOfKiwis/7);
var Total = a * 100 + ((NumberOfKiwis-(a * 7)) * 18);
alert(Total) // 254

You'd probably want to divide total by 100 to get pounds and pence then
stick a £ sign in front of it

--
Cheers,
Jon
Microsoft MVP


total = Math.Floor(NumberOfKiwis/7) * 100 +

 

[Jon Spivey]

Good, sorry you got that Aunt Sally nonsense earlier

 

[Steve Easton]

LOL.
My Dear Aunt Sally goes waaaaayyyyy back to the days of DOS
But, it still works for me.
;-)



--
Steve Easton
Microsoft MVP FrontPage
95isalive
This site is best viewed............
........................with a computer