Mark several form fields

(From the reference file)

Check a check box:

// check the box "ChkBox"
var f = this.getField("ChkBox");
f.checkThisBox(0,true);

There are 2 ways you can do this. You can set the value of the check box to the 'exportValue' of the box or use the 'checkThisBox()' metohd.

// define an array of the check boxes to check
var aCheckBoxes = new Array('box1', 'box2', 'box3');
// do not change the code below this line
( function() {
// field object
var oField;
// loop trough fields
for(i in aCheckBoxes) {
// get a check box
oField = this.getField(aCheckBoxes[i]);
// force it to be checked
oField.checkThisBoxmethod(0, true);
}
return;
}) ();

More information is available in the Acrobat JavaScript API Reference.

Thank You for the solution, but the script does not work.
I copied the script into my pdf,
- where I create a button
- in Action fan I choose Run a JavaScript
- I copy the script into the field
- make some changes
- run the script

But nothing happens.

What am I doing wrong?

How are we supposed to know what you're doing wrong if you don't provide any actual information?
What did you change? What do you see in the console? etc.

I used this script an the only thing I change was this line:
var aCheckBoxes = new Array('box1', 'box2', 'box3');

I also tried the s from cript try67. It does not work either

That script has a typo (checkThisBoxmethod) in it. Try this:

(function () {

// Create an array of check box names
var aCheckBoxes = ["box1", "box2", "box3"];
var oField;

// Loop through fields
for (var i in aCheckBoxes) {

// Get a check box
oField = getField(aCheckBoxes[i]);

// Force it to be checked
oField.checkThisBox(0, true);
}

})();

You will have to replace "box1", "box2", "box3" in the code above with the actual names of the check boxes you want to control. Add as many check box names to the array as you need. This code assumes that if you have more than one check box with the same name, that they also have the same export value.

Thank you George_Johnson
The script works fine. My Christmas is saved