How to replace text style for single word in internal table data using Java script in adobe forms

Hello Team,

In my adobe form internal table it_lines have text field which contains material description which gets displayed in adobe form as item table. .

My requirement is to change one word style as ITALIC using Java scripts for example in below text "SAP" should be in ITALIC.

Example: sample text "SAP" .

I need to set loop for it_lines and replace "SAP" style as ITALIC using java scrip in adobe form

Please someone help me with sample code.