How to Display Dynamic Text in a PDF Form Based on User Input
Question details
The user wants to show different text blocks or bullet lists in a fillable PDF form depending on the value entered or selected in another field.
- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Creating a dynamic fillable PDF form where content changes based on user selections.
- Observed behavior
- The user needs a method to dynamically alter text or visibility of fields since standard PDF content is static.
Ensure you have access to a PDF editor that supports form creation and JavaScript, such as Adobe Acrobat Pro. Basic knowledge of JavaScript is highly recommended for setting up dynamic field behaviors.
Use JavaScript to Control Field Values and Visibility
Since PDF base content is fixed, you must use form fields and JavaScript to dynamically display text based on user input.
PDF documents have a fixed layout, meaning you cannot dynamically push text down like in a Word document. To achieve dynamic text, you need to create text fields for the maximum possible content and use JavaScript to change their values or toggle their visibility (hidden/visible) based on the user's selection in a dropdown or text field.
Add a Dropdown or Text field that the user will interact with. Note its exact field name in the properties panel.
Add Text fields where the dynamic text or bullet points will appear. Size them to fit the maximum number of lines you might need.
Right-click the target text field, select 'Properties', and go to the 'Calculate' tab. Select 'Custom calculation script' and click 'Edit'.
Enter a JavaScript if/else or switch statement that checks the value of the trigger field and sets event.value of the current field accordingly. Alternatively, use a script on the trigger field to change the display.hidden or display.visible properties of the target fields.
Manage PDF Forms with WPS Office
WPS Office provides a comprehensive PDF editor that allows you to view, fill, and manage interactive PDF forms effortlessly. It is a lightweight and powerful tool for all your document needs.
- 1. Open your PDF: Launch WPS Office and open your interactive PDF form.
- 2. Access the Form tab: Navigate to the 'Form' tab to view all fillable fields.
- 3. Fill and save: Enter your information into the fields and click 'Save' to preserve your dynamic inputs.
Frequently Asked Questions
Can I make a PDF layout expand automatically based on text length?
No, standard PDF documents have a fixed layout. Unlike Word documents, you cannot make the page automatically expand or push content down. You must allocate enough space for the maximum text length using fixed-size form fields.
Why isn't my JavaScript working in the PDF form?
JavaScript may not work if there are syntax errors in your code, if the field names referenced in the script do not exactly match the actual field names, or if the user's PDF viewer has JavaScript disabled for security reasons.
Can I hide a field until a specific checkbox is checked?
Yes, you can add a custom Keystroke or Mouse Up JavaScript action to the checkbox that changes the target field's display property to visible when checked, and hidden when unchecked.
