thane,
it's trying to concatenate them instead of adding, try something like this(forcing the
values into numbers then adding them):
<input type="Text" name="CostOfMeals#Line#" value="0" validate="float"
required="Yes" size="5" maxlength="5"
onchange= "
var num1=new Number(eval(window.document.ExpenseForm.Mileage#Line#));
var num2=new Number(eval(window.document.ExpenseForm.CostOfMeals#Line#));
window.document.ExpenseForm.TotalAmount#Line#.value = num1 + num2;
">
hth
-seth
-----Original Message-----
From: Thane Sherrington [mailto:[EMAIL PROTECTED]]
Sent: Monday, September 30, 2002 11:04 AM
To: CF-Talk
Subject: Adding two fields and displaying in a third
I'm writing a form that allows a person to fill in the mileage and meal
expense, and then displays the total in a third field. I'm using this in
the meals expense field:
<input type="Text" name="CostOfMeals#Line#" value="0" validate="float"
required="Yes" size="5" maxlength="5"
onchange="window.document.ExpenseForm.TotalAmount#Line#.value=eval(window.document.ExpenseForm.Mileage#Line#)+eval(window.document.ExpenseForm.CostOfMeals#Line#);">
But the third field evaluates to [object][object]. How do I get this to
add up?
T
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