Removing zeros from pdf document

You can also use the code in the custom validation script.

I did not understand the previous advice.

Ok, here is my dilema. I am a novice with JavaScript.
I am trying to make a voucher for travel and I do not want all the zeros in the form.
I have a table with 9 columns in it. Each column has 7 rows. The first column is titled "Miles", the second is "Mileage", the third is "Public transportation", next is "lodging", next "lodging tax", next "MIE", next "parking", and finally "other". Below each column is a sub total for each. I titled them Sub.0, Sub.1 etc...
Now the JavaScript I have inserted for each column sub total is:
var f = this.getField("MILES1");
var g = this.getField("MILES2");
var h = this.getField("MILES3");
var i = this.getField("MILES4");
var j = this.getField("MILES5");
var k = this.getField("MILES6");
var l = this.getField("MILES7");

if (f.value !=0)
event.value = f.value + g.value + h.value + i.value + j.value + k.value + l.value + m.value
else
event.value =""

Now this works to remove the zeros for each sub total.

Then I have a total voucher cell and I use the following JavaScript:

var f = this.getField("Sub.0");
var g = this.getField("Sub.1");
var h = this.getField("Sub.2");
var i = this.getField("Sub.3");
var j = this.getField("Sub.4");
var k = this.getField("Sub.5");
var l = this.getField("Sub.6");
var m = this.getField("Sub.7");

if (f.value !=0)
event.value = f.value + g.value + h.value + i.value + j.value + k.value + l.value + m.value
else
event.value =""

This also works to remove the zero, but when I put any amounts in the upper columns, the result adds about 10000.00 for some reason, and I cannot figure out why. I use the debugger, but I am still novice enough not to see the problem. Any help with my JavaScript would be helpful and greatly appreciated.

Each text flied has a 'Validation' property and one of the options is a JavaScript, one can place the code:

in the JavaScript option. This code will suppress a zero result no matter which calculation option one chooses.

JavaScirpt stores numbers in a format different than text, but numbers can also be stored or treated like text and are then in a different format than a number.

The '+' is the arithmetic addition operator and the text string concatenation operator. And how the '+' operator works depends upon what JavaScript thinks the values being processed are numbers (addition), text string (concatenation), or a combination of number and text string (concatenation). So if one wants the addition operation, one has to force all values to numbers using the 'Number(nValue)' constrictor.

A null string is a character string, but if constricted to a number it will be treated as zero. So any null string in a custom calculation where one is trying to add numbers will not be added but concatenated to the value.

But you could also use the other 2 methods for a calculation and those 2 methods will restrict the calculation to only numbers and with the validation script to suppress zero, have the problem solved.

See [url=https://acrobat.com/#d=BTBoKOwsJb0KdpT-*8SZqw]Sum vs. Plus[/url] for an example of how a null can change an addition process.

Thanks!!! That worked!

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George, thanks so much! I don't know anything about JavaScript, and my form now works as intended.