Count Total number of Checkboxes

[Falcongaze]

Hello everyone,

I'm fairly new at Javascripting and PDF forms, and I would love some help,

I have a list of books with checkboxes which spams for almost 9 hundred items, and I want to count the total number of checkboxes (checked and unchecked); as I have deleted some fields I know that the last numeral isn't the total. So I'd like for a way to calculate it automatically

I've managed to put this code together:

var cntr = 0;

    for (var i = 0; i <= this.numFields; i++)

    {

        var mf = this.getField(this.getNthFieldName(i));

        if (mf.type == "checkbox")

        {

                cntr++;

        }

    }

event.value = cntr;

However the number thrown is "685", but the last checkbox numeral is 896; and I didn't delete more than 10-15 fields.

Thank you so much in advance!

Have a great day!

[Bernd Alheit]

Are there checkboxes with the same name?

[Falcongaze]

they are named as "Book Item #"

[try67]

You can check if there are multiple fields with the same name by adding this to your loop:

if (typeof mf.page=="object") cntr+=mf.page.length;

If the result is not the same as before it means there are fields with more than one instance.

[Falcongaze]

I tried inserting it before //if (mf.type == "checkbox")// but now it doesn't show anything, put back the code as before, and still show anything, leaves the field blank

what have I done?

HELP PLEASE!

[try67]

It needs to go after it. Post you full code, and also check the JS Console for errors.

[try67]

Use this code:

var cntr = 0;
for (var i = 0; i <= this.numFields; i++) {
    var mf = this.getField(this.getNthFieldName(i));
    if (mf.type == "checkbox") {
        if (typeof mf.page=="object") cntr+=mf.page.length;
        else cntr++;
    }
}
event.value = cntr;

[Falcongaze]

Alright, it throws this error:

7:Field:Calculate

TypeError: mf is null

I also manually renamed every checkbox as "BookItem###" (no spaces); so they are numbered as 001, 002, ...056, and the last numeral is indeed 685. There were duplicates underneath some checkboxes.

So I'm guessing that the concatenated ### is what is damaging the code.

How can I place "var i" as a 3 digit number?

[Falcongaze]

I'm trying this:

var cntr = 1;

for (var i = 1; i <= this.numFields; i++)

{

    var num = 0;

    if (i<10)

        {num.valueAsString = "00" + i;}

    if (i<100)

        {var num.valueAsString = "0" + i;}

    var mf = this.getField(this.getNthFieldName(num));

    if (mf.type == "checkbox")

    {

        if (typeof mf.page=="object")                         

            cntr+=mf.page.length;

        else cntr++;

    }

}

event.value = cntr;

but it throus me an error after:

    if (i<10)

        {num.valueAsString = "00" + i;}

    if (i<100)

        {var num.valueAsString = "0" + i;}

Error: SyntaxError: missing ; before statement

10: line 11

[Falcongaze]

Alright, it works like this:

var cntr = 0;

for (var i = 0; i <= this.numFields; i++)

{

    var num = "";

    if (i<10){num = "00" + i;}

    if (i<100){num = "0" + i;}

    var mf = this.getField(this.getNthFieldName(num));

    if (mf.type == "checkbox")

    {

        if (typeof mf.page=="object") cntr+=mf.page.length; 

        else cntr++;

    }

}

event.value = cntr;

Although, it counts 30 text fields more... any ideas?

[Bernd Alheit]

Using the variable "nun" makes no sense.

[try67]

True. If you specify the field name there's no need to get getNthFieldName, and vice versa.

[Falcongaze]

Hi try67!

I've got it working using the this.getField(this.getNthFieldName(i) code, but I'm learning, so I would like to know how to put the field name "BookItem" instead. I tried this, but throws me an error:

TypeError: f is null

1282:byteCodeTool

This is the code I'm using:

var cntr = 0;

for (var i = 0; i <= this.numFields; i++)

{

    var mf = this.getField("BookItem" + i);

    if (mf && mf.type == "checkbox")

    {

        cntr++;

    }

}

event.value = cntr;

Thanks so much guys!

[Bernd Alheit · Accepted solution]

You can create a list of all check boxes:

var cntr = 0; 
for (var i = 0; i <= this.numFields; i++) { 
    var mf = this.getField(this.getNthFieldName(i)); 
    if (mf && mf.type == "checkbox") { 
        cntr++;
        console.println(cntr + " name: '" + this.getNthFieldName(i) + "' pages: " + mf.page);
    } 
} 

[Falcongaze]

Worked!

placed it with event.value like this

var cntr = 0;

for (var i = 0; i <= this.numFields; i++)

{

    var mf = this.getField(this.getNthFieldName(i));

    if (mf && mf.type == "checkbox")

    {

        cntr++;

    }

}

event.value = cntr;