Simple Addition Using Integers Stored In Variables

Mar 31, 2007

i have this simple function...

function update(value, oldvalue)
var a = value;
var b = oldvalue;
var result = a + b;

and call the function using a field with this...

onkeyup="update(this.value, other)"

But all its doing is concatenating the 2 numbers together as though they are strings!!!

so if this.value = 11
and other = 15
it displays 1115

i want to add them and display the total, do i need to specify them as being integers or something?

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Mar 14, 2007

I have following function, but how can I do addition?


f.Field1.value =2
f.Field3.value =3
f.Field4.value =1


f.Total.value =231, instead of 6

function update( ) {
var f = document.myform
f.Total.value = f.Field1.value + f.Field2.value + f.Field3.value
return true;

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var purchasePrice = window.prompt("Please enter the purchase price:", 0);
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