How to Dynamically Change PDF Text Field Tooltips with Acrobat JavaScript
Question details
The user needs a programmable method to dynamically update the tooltips for approximately 100 text fields in a PDF using a JavaScript loop.

- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Modifying a large number of text field tooltips in a PDF form simultaneously without doing it manually one by one.
- Observed behavior
- The user requires a batch-processing JavaScript solution to iterate through document fields, identify specific text fields by pattern, and overwrite their tooltip text.
Ensure you have Adobe Acrobat Pro or a compatible advanced PDF editor capable of executing form JavaScript. Always test your scripts on a copy of your PDF form to avoid accidental permanent changes to your document.
Use the JavaScript Console to Run a Loop Script
Execute a loop script within the Acrobat JavaScript Console to quickly iterate through and modify multiple text field tooltips at once.
Instead of changing 100 fields manually, you can use the Acrobat JavaScript Console to automate the process. By utilizing the 'userName' property (which controls the tooltip), you can parse through all fields and assign new tooltip text based on specific conditions.
In Adobe Acrobat, open the JavaScript Console. You can usually access this by pressing 'Ctrl + J' on Windows or 'Cmd + J' on Mac.
Copy and paste the following script into the console: for (var i = 0; i < this.numFields; i++) { var oFld = this.getField(this.getNthFieldName(i)); if (oFld.type == 'text' && /entername/.test(oFld.name)) { oFld.userName = 'New Tooltip text'; } }
Modify the regular expression ('/entername/') to match the naming pattern of your specific text fields. Change 'New Tooltip text' to the actual text you want displayed when users hover over the fields.
Highlight all the pasted code in the console and press 'Enter' (on the numeric keypad) or 'Ctrl + Enter' to execute the script and update the fields.

Edit PDF Form Fields Visually with WPS PDF
If you prefer a visual approach over writing JavaScript code, WPS Office provides an intuitive PDF form editor. You can easily select form fields and update properties like tooltips individually without needing complex scripts.
- 1. Open the PDF in WPS Office: Launch WPS Office and open your PDF form document.
- 2. Access the Form Tab: Navigate to the 'Form' tab on the top ribbon menu to access form editing tools.
- 3. Open Field Properties: Right-click the target text field you want to modify and select 'Properties' from the context menu.
- 4. Update the Tooltip: Locate the 'Tooltip' field within the properties dialog, enter your desired hover text, and save the document.

Frequently Asked Questions
What property defines a text field's tooltip in Acrobat JavaScript?
In Acrobat JavaScript, the tooltip is defined by the 'userName' property of the field object, not the 'name' property.
Can I apply tooltips to only specific fields instead of all fields?
Yes. Within your JavaScript loop, you can use conditional 'if' statements (such as testing the field's name against a regular expression) to apply new tooltips only to fields that meet your specific criteria.
Where can I find more information about Acrobat form programming?
You can find extensive documentation and object properties in the official Acrobat DC SDK JavaScript Reference provided by Adobe.




