Validating User Selection for Combo Box

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I have a form which utilizes several combo boxes which are required to be filled out by the user. The default value of these combo boxes are "-- Select --". How would I write validation which requires the user to select any other value held in the combo box?

custom validation
java
comboxbox
forms
Acrobat SDK and JavaScript

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try67

Community Expert

The first step is to define what you mean by "require". What should happen if the user doesn't make a selection?

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Anonymous

If the user doesn't make a selection then the form should not allow them to utilize the submit button, which sends the pdf in an email to a specified email address.

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try67

Community Expert

Have you searched the forums for validation of required fields? I've posted the code that does that many times...

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