Need checkboxes in PDF that create a list of those items later in the same PDF

Question

I asked this in Indesign, but they said to ask again here.
Hi Folks,
I create PDF travel guides in indesing and turn them into PDF.  I also have Acrobat. 
For each location in the travel guide I would like to have a checkbox available on the page, next to the title, that a reader could check if they decide they want to visit that location/activity.  Then, those title results would populate a list in the same PDF eBook, in something like a notes section in the end of the document, so that the user has an easy list to view of what they decided to visit.  They should be able to uncheck them later so that they can create new lists. 
Is this possible in a PDF?
Thanks for your help.

Answer 1

Sure it's possible. The easiest way to set this up would be to set the text you want associated with each check box as the export value of the check box, and set up a multiline text field in the notes section with a custom calculation script. It might look something like this:
// Custom Calculate script for text field
var i, v, s = "";
// Loop through the check boxes and get text if they're selected
for (i = 1; i < 11; i += 1) {
    // Get the value of the current check box
    v = getField("checkbox" + i).value;
    // Add current checkbox value to summary string, separating each with a carriage return
    if (v !== "Off") {
        s += v + "\r";
// Set this field's value
event.value = s;
This script assumes the check boxes are named checkbox1, checkbox2, ...checkbox10, so you'd have to modify to match your form. The field's calculate script will get triggered whenever any field value changes, so it will get updated each time a check box is selected or deselected.