Script for disappearing instructional text in dropdown list

Question

Hi all,

Would someone be so kind as to supply some code for displaying disappearing instructional text in a dropdown list? I've found plenty of guidance for code that works with text fields, but nothing substantial for dropdown lists. I'm not a coder, I'm a copy and paster 😀. I tried adapting the text field examples to my drop down lists, but it negates any selections made from the list, so I'm assuming I need different code to accomplish this. Thanks in advance!

PDF Automation Station · Accepted Answer

Thanks! This solved the main issue, selections are sticking as intended.

The only thing that's not quite right is that when making a selection from the dropdown, I was hoping the resulting font size could be auto sized. At the end of the code, is there something I can replace the font size 8 with to instead auto size the choice to fit the box?

event.target.textSize=0;

PDF Automation Station · Answer

Enter the following script as a custom format script:

if(!event.value){event.value="Instructional Text"}

Keep in mind that the first entry in the list needs to be null for this to work. You can only do that by running the setItems method on the field. Example:

this.getField("Dropdown").setItems(["","AA","BB","CC"]);

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