Need a little help with a discount code

[jocosity]

Hey everyone,

I'm totally new to this and learning as I go - so please bare with me!

I need to add a discount code to my website and I can't seem to get it right.
Using the code "JoeCain" should award the customer a $25 gift certificate.
I tried my best to write the code, but my total amounts to $25 and not the price minus $25.

Here's what I have..(ignore the 'frenchfry' code, that one was written by the man who helped with my site)

switch(discount) {
case 'frenchfry':
discount_amount = 0.10
price = price - (price*discount_amount)
discount_applied = ' <i>(Applied 10% Off)</i>'
break;
case 'JoeCain':
discount_amount = 25
price = price - (price-discount_amount)
discount_applied = ' <i>(Applied $25 Off)</i>'
break;
}

$('#price').html('Price: $'+price+'.00' + discount_applied )
}

[Fou-Lu]

This would be javascript, not java (java cannot switch on String datatypes).
Moving from java to javascript forum.

[Old Pedant]

Wrong:
price = price - (price-discount_amount)

Right:
price = price-discount_amount;

Or, more succinctly:
price -= discount_amount;

By the same token, this code:
discount_amount = 0.10
price = price - (price*discount_amount)

Could be written:
discount_amount = 0.10;
price -= (price*discount_amount);

Or, even simpler,
discounted_rate = 0.90;
price *= discounted_rate;

Please be sure to put a semicolon at the end of every JavaScript statement.

No, it's not required. But there are a few cases where what YOU think is the end of the statement turns out not to be where JS thinks it is. Play it safe.