How to make the word appear / disappear automatically?

New Here ,
Jul 22, 2018 Jul 22, 2018

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Initially, there are three text field.

If I input any word or number in field A, for example

Finally, the word " - " will be automatically appeared in field B without any input.

Similarly, If data in Field A is deleted, the word "-" will be removed automatically.

How to make the relevant code in fillable PDF? Thank you very much!

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Acrobat SDK and JavaScript

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Most Valuable Participant ,
Jul 22, 2018 Jul 22, 2018

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As the custom validation script of field A enter this code:

this.getField("B").value = (event.value=="") ? "" : "-";

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New Here ,
Jul 22, 2018 Jul 22, 2018

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Thank you for your reply.

Do I need to add the code below?

if.....else

event.rc = false

event.value=""

Thank you very much

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Most Valuable Participant ,
Jul 23, 2018 Jul 23, 2018

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No. Use the code I provided.

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