asked on # Form Field Validation Logic

I have a form with three fields. 1 or more of these fields needs to contain at least 1 number. (all three fields can only contain a number) At least one field needs to contain a number. At the moment you can enter Zero (0) but it must be at least the number 1. What type of jQuery validation can I do to validate these three fields for this type of rule?

jQueryJavaScript

@Julian All fields can contain a number (character [0-9]) BUT at least one of the fields MUST contain a number (character [0-9])

Can they contain other characters in addition to a number?

Assuming it is only numbers then is it single digits only or can it be more than one digit?

I am assuming from what you said that the following is valid.

F1: (empty)

F2: 33

F3: (empty)

Is the above valid?

Assuming it is only numbers then is it single digits only or can it be more than one digit?

I am assuming from what you said that the following is valid.

F1: (empty)

F2: 33

F3: (empty)

Is the above valid?

@Julian

Yes. But the following is not:

F1: (empty)

F2: 0

F3: (empty)

It has to be at least the number 1

Yes. But the following is not:

F1: (empty)

F2: 0

F3: (empty)

It has to be at least the number 1

And

F1:ABC

F2:A2

F3:

I am still not certain of the exact set of rules. Can fields contain non-numerics.

If a field is allowed alpha's does F2 count?

F1:ABC

F2:A2

F3:

I am still not certain of the exact set of rules. Can fields contain non-numerics.

If a field is allowed alpha's does F2 count?

NO, that will not work. Only Numeric values except the number Zero. At least one of the three fields must contain a Numeric value.

Ok got it - will post back shortly

What about this.

```
var total = 0;
$('input').each(function(i, e) {
total += $(e).val();
});
if (total > 0) alert('you are ok');
else alert('invalid input');
```

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Thanks. It was not 100% what I needed but this helped me to understand what to do. Thanks!

You are welcome.

1 or more of these fields needs to contain at least 1 number

all three fields can only contain a number

Are you saying that a field must contain at least one numeric character [0-9] or are you saying that all fields must contain only numbers?