input field auto-calculation

[jonathen]

Hi,

I have been trying to find a way (using PHP Bible, google, etc) to auto-calculate some fields within a form. I don't know if this can be done with PHP or if I would have to use javascript. Although PHP is preferable, I'm desperate, so will use any scripting language to perfom the calculation! Does anyone have any ideas on how I can accomplish this?

I need it to calculate what the user inputs in the following way:

a user fills out the form with (e.g) the following values:

field1 value=10
+
field2 value=20
+

field3 value=5

hiddenfield subtotal (35)
x

1.175

field4 value=29.79
+

hiddenfield subtotal (35)

field5 value=64.79

I also need the script to round the value of field4 off to the nearest number, and need field4, and then field 5 to display the respective results once the user clicks on them.

Any help would be greatly appreciated 🙂

Jonathen

[J_ystick_FI]

if you want to calculate totals and subtotals of your form, and beeing able to change totals if the user change the values in your form , Javascript is the way to do that..(or you can't be able to reflect user changes in form)

you can acces values in this way..

window.document.formname.field1.value

to get a total...

window.document.formname.hiddentotal.value = window.document.formname.field1.value +
window.document.formname.field2.value +
window.document.formname.field3.value +
..........
.........
Hope this helps

😃 Joystick_FI😃

[jonathen]

Thanks for that 🙂