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Check and Uncheck a checkbox based on another checkbox status

Community Beginner ,
Oct 31, 2020

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I have an Acrobat form with a checkbox that checks another checkbox.  I have used the mouseUP action in the original checkbox to Run a Javascript to check the 2nd checkbox which works.

If I uncheck the original checkbox, the 2nd checkbox still has a checkmark.  I have tried many solutions, but have not found success.

My mouseUP JS in the original checkbox is:

if(event.target.isBoxChecked(0))
this.getField("200Plus").checkThisBox(0,1);

 

Go easy on me, as I barely know how to spell Javascript.

Thank you.

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Acrobat SDK and JavaScript, How to, PDF forms

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Check and Uncheck a checkbox based on another checkbox status

Community Beginner ,
Oct 31, 2020

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I have an Acrobat form with a checkbox that checks another checkbox.  I have used the mouseUP action in the original checkbox to Run a Javascript to check the 2nd checkbox which works.

If I uncheck the original checkbox, the 2nd checkbox still has a checkmark.  I have tried many solutions, but have not found success.

My mouseUP JS in the original checkbox is:

if(event.target.isBoxChecked(0))
this.getField("200Plus").checkThisBox(0,1);

 

Go easy on me, as I barely know how to spell Javascript.

Thank you.

TOPICS
Acrobat SDK and JavaScript, How to, PDF forms

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70

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Oct 31, 2020 0
Adobe Community Professional ,
Oct 31, 2020

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This works for me:

 

 

if (event.target.value =="Yes") {

var f = this.getField("200Plus");

f.checkThisBox(0,true);

} else {

f.checkThisBox(0,false);

}

 

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Oct 31, 2020 0
Adobe Community Professional ,
Oct 31, 2020

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This will not work. In the else part the variable f is undefined. You set the variable f only in the then part.

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Oct 31, 2020 0
Adobe Community Professional ,
Nov 01, 2020

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Thank you Bernd  but I tested this code and I don't get undefines error in the console because this script is not meant to obtain a value entered in this field. 

 

As explained by George Kaiser in this quick tutorial:

 

https://answers.acrobatusers.com/How-do-I-reference-a-field-through-javascript-q192043.aspx 

 

using this.getField("myCheckBox")   , the script expects to get the field object (in this case a checkbox widget), by which it will return the field object as the variable "oField".  

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Nov 01, 2020 0
Adobe Community Professional ,
Nov 01, 2020

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Close and restart Acrobat. Then test the form again.

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Nov 01, 2020 0
ls_rbls LATEST
Adobe Community Professional ,
Nov 01, 2020

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I closed Acrobat and restarted it.

 

I don't see where this script doesn't work.

 

  • First slide, boxes are checked with the console opened:

 

checkboxes.png

 

  • Second slide, boxes are unchecked with the console opened:

checkboxes2.png

 

Now I'm confused... should I be getting an undefined error? 

 

In any case I would expect a syntax error which actually happens when I add ".value" to the variable as you suggest:

 

var f = this.getField("200Plus").value;

 

In fact, I get a "Type Error" with your suggestion:

 

checkboxes3.png

 

Also note that this breaks the original intent of the script as requested by the OP since the primary checkbox looses the ability to check the secondary checkbox.

 

In the end, I am running the script like shown below (which is not throwing any errors and there's no need to define or even declare a variable using the guidance posted by George Kaiser in the link that I posted earlier):

 

if (event.target.value =="Yes") {

this.getField("200Plus").checkThisBox(0,true);

} else {

this.getField("200Plus").checkThisBox(0,false);

}

 

 

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Nov 01, 2020 0
Engaged ,
Nov 01, 2020

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Just name both checkbox same and leave them with same export value.

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Nov 01, 2020 0
Adobe Community Professional ,
Nov 01, 2020

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And what happens if the user wants to have the ability to check or uncheck the secondary checkbox when the primary chexkbox is unchecked?

 

If the case would be that the user needs either the primary or the secondary box checked at a time, then it should be better to implement a pair of mutually exclusive radio buttons that will behave like checkboxes.

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Nov 01, 2020 0
Contributor ,
Nov 01, 2020

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And what happens if the user wants to have the ability to check or uncheck the secondary checkbox when the primary chexkbox is unchecked? Then why would he even need code in first place?

If you readed his post carefully you would see that he has no intention of clicking second checkbox.

To qoute OP "If I uncheck the original checkbox, the 2nd checkbox still has a checkmark. I have tried many solutions, but have not found success." in this situation why not just click 2nd box? This tells me he has none intention of clicking it. Easiest solution would be to just copy first box.

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Nov 01, 2020 0
Adobe Community Professional ,
Nov 01, 2020

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Yes you're correct. But this is one of those threads where the user needs to clarify his intent because it is still ambiguous.

 

Note that both of us have interpreted the user's intent differently. So it needs to be clarifies by the user.

 

Like, for instance, I would like in my PDF to be able to have the ability to check or uncheck the secondary checkbox independently from the checked state of the primary checkbox, specially if the primary checkbox is on the first page of a document but the secondary checkbox is on page 10 for example.

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Nov 01, 2020 0