How to get 1 text field to control the visibility of another

Question

Hello,the basics of what I am trying to to is this :I have a text field called Panel length 1 - i want it so that when a number that is 45 or less is entered into that text field , a second text field called 20ga 1 will become visible - if the number 46 or greater is entered, or there is no number entered at all the text field called Panel length 1 then the text field called 20ga 1 will stay hidden. does this make sense or even possible?thanks in advance for any guidance that can be provided.

Thom Parker · Accepted Answer

Yes, this is possible and not very difficult.

Use a validation script on the "Pandl Length 1" field.

this.getField("20ga 1").display = ((event.value != "") && !isNaN(event.value) && (event.value <= 45))?display.visible:display.hidden;

this code tests the entered value for a non-empty entry, that it is a number, and it is less than or equal to 45.

You can read more about hiding and showing fields here:

https://www.pdfscripting.com/public/Hiding-and-Showing-Form-Fields.cfm

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