Can I populate a text field with just the first name

Can I populate a text field with just the first name without using javascript?

1) You can use the Field Prepopulator app: https://apps.jotform.com/app/field_prepopulator 

2) Or you can do it via URL parameters: https://www.jotform.com/help/71-Prepopulating-Fields-to-Your-JotForm-via-URL-Parameters 

Let us know if you need more help.