Extract doc text to use in form fields

Is it possible to use JavaScript to get text from a document (say originally
created in MS Word them printed to PDF) then add it to a form field in the same
document?

I have a cover sheet in PDF with multiple form fields, some of which could be
populated with information in the rest of the document. Most of the items have a
identifiable text string before the text I need such as "name:
XXXXXX".