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Setting the value of an unchecked check box in a form

Forum Index > Forms: Acrobat > Setting the value of an unchecked check box in a form
2008-11-20 12:28:12
Renthing
Registered: Oct 24 2008
Posts: 38
Answered

So, Adobe 8 Professional allows you to set the value of the check box when it is checked but not when it is unchecked.

My situation is I have three fields and a check box, where the three fields are numbers that are manually input to the form and I would like the check box to add 3 to the total of the three fields if it is checked, otherwise leave the total alone if it's unchecked.

I've set the checked value to three and it works as I want it to, adding 3 to the total of the three fields, but when it is left unchecked the field where the total should be displayed displays "NaN" instead.

How do I set the unchecked value of the check box?

Here is the code I'm working with as of right now:

(function () {
var a = +getField("Number 1").value;
var b = +getField("Number 2").value;
var c = +getField("Number 3").value;
var d = +getField("CHK BOX_1").value;
event.value = (a + b + c) + d;
})();

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2008-11-20 12:34:34
#1
gkaiseril
Expert
Registered: Feb 23 2006
Posts: 4308
In Acrobat Forms, not LiveCycle Designer, the unchecked value of an unchecked check box or radio button is "Off", and this is case sensative.

(function () {
var a = +getField("Number 1").value;
var b = +getField("Number 2").value;
var c = +getField("Number 3").value;
var d = +getField("CHK BOX_1").value;
if (d == "Off") d = 0; // if not checked set value to zero
var e = +getField("TOTAL ARMOR CHECK PENALTY").value;
event.value = (a + b + c + d)-e;
})();

George Kaiser

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2008-11-20 13:00:43
#2
Renthing
Registered: Oct 24 2008
Posts: 38
Tried your suggestion and it's still giving me a "NaN' result when it's unchecked (What does NaN stand for? I did a search in Help and I received no results).

New code:

(function () {
var a = +getField("Number 1").value;
var b = +getField("Number 2").value;
var c = +getField("Number 3").value;
var d = +getField("CHK BOX_1").value;
if (d == "Off") d = 0;
event.value = a + b + c + d;
}());

When I set the value of the Total field as number I get the error message "The value entered does not match the format of the field [ Total ]."
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2008-11-20 14:00:57
#3
gkaiseril
Expert
Registered: Feb 23 2006
Posts: 4308
NaN stands for "Not a Number".

Since you can not change the value of D after the assignment. just check the value of the field and set it accordingly.

(function () {
var a = Number(this.getField("Number 1").value);
var b = Number(this.getField("Number 2").value);
var c = Number(this.getField("Number 3").value);
if (this.getField("CHK BOX_1").value == "Off")
var d = 0
else var d = Number(this.getField("CHK BOX_1").value);
event.value = a + b + c + d;
}());

George Kaiser

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2008-11-20 14:11:36
#4
Renthing
Registered: Oct 24 2008
Posts: 38
That worked! Thank you!
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2008-11-20 14:23:47
#5
George_Johnson
Expert
Registered: Jul 6 2008
Posts: 1876
> var d = +getField("CHK BOX_1").value;The problem is this line. It attempts to convert the string "Off" to a number, which results in the NaN value. This means that the variable d will never be equal to "Off" and your test will always fail. So you could have just left off the + operator off and done this:

(function () {var a = +getField("Number 1").value;var b = +getField("Number 2").value;var c = +getField("Number 3").value;var d = getField("CHK BOX_1").value;if (d == "Off") d = 0;event.value = a + b + c + d;}());

George
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