Adding form values together

[pinkotoad]

Here is a small example.

function ComputeTotal( form )
{
CPU = form.CPU.value
MOB = form.Mainboard.value

subtotal = CPU + MOB

}

This doesn't add the two values, just jams them together.

Forgive me, I haven't done much JavaScripting.:o

[HappyDude]

I believe that your problem is that form values are actually strings, even if they're just strings of numbers, so when you add them, they are being treated as strings and being concatenated(sp). The solution is to use parseInt() on the values before adding them...

CPU = parseInt(form.CPU.value)
MOB = parseInt(form.Mainboard.value)

subtotal = CPU + MOB

[tamienne]

I don't think you get a decimal number if you use parseInt though. You can try Number...
CPU = Number(form.CPU.value)
MOB = Number(form.Mainboard.value)