Is it possible that when a user open up a form (reader extended), and upon clicking a button, delete away certain fields in the form, like a textbox or subform. And when user save and reopen the form, the deleted fields will not appear. Possible? Thanks.
If you make the fields hidden then they exist but they are not part of the layout. You will have to store the state of the form so that you can set it when the form opens for the second time.
There is a problem, if the user disable java script from the Adobe Reader, he or she will be able to view the hidden fields when the form is opened for the second time. Any solution?
Then the only other way I can think of is to have two different templates and export the data out of the 1st one and import it into the second one. If the fields are not in the second one then the data for those fields is ignored.
You can also set a new hidden field value to a new value after the button is clicked. Then in the initialize of the form you can hide those fields by looking at the given hidden value.
