Enable JavaScript Actions
See also Run Script Right Control.
Use external JavaScript editor
By default, you can use the built-in JavaScript editor in Foxit PDF Editor to edit your code. Foxit PDF Editor supports calling an external JavaScript editor for coding including WebStorm, Sublime Text, and more.
To use an external JavaScript editor, select this option to add a JavaScript editor as the default JavaScript editor in Foxit PDF Editor. Note that when editing JavaScript code in an external editor, Foxit PDF Editor is inaccessible.