java script help to perform caculation

[darkwarrior]

Hi to all the forum members!, I created a order form using textboxes, to collect a multiline/singleline input of text however in my case, the form has to also calculate numeric values, as well as add them and give a total, so let me illustrate, txtbox1 collects singleline text(non numeric data), txtbox2(quantity) collects singleline numeric data, multiplies it by txtbox3 (price), totals that by txtbox4(subtotal). I am using Visual web developer, language c#, I have written a stored procedure to take the input from the text boxes and insert them into a database (SQL server 2005 express), so i need a javascript to calculate, tax, discount and give a true total Any help/advice would be welcomed!!

[Mixmasterxp]

i dont quite get this. You want a javascript to take data from 2 textboxes, work on it and put the answer in another textbox, use that same answer and submit to the database?
you'd have to do something like this in the js:
var txtb1 = document.getElementByID('<%= textbox1.ClientID %>');
var txtb2 = document.getElementByID('<%= textbox2.ClientID %>');

typecast this to int or double or watever...not sure if you even typecast in javascript.

var myFinalValue = txtb1.value + txtb2.value;
document.getElementByID('<%= textbox3.ClientID %>').value = myFinalValue;

[psybuck2002us]

This thread was created in the wrong section.

[Mixmasterxp]

put that in some onChange event or watever u want when the textbox should update.

[fatta77]

instead of using javascript (client side), why not just do it on the server side. It is much easier that way.