add loading to html table using reactjs

i'm doing some thing like friends list and send request. in my project supposed to allow add multiple connections together. so i have table html and multiple check-boxes i want after tick some check boxes then (Send Request) i will post the request for each one and in meantime when it's successful i want to show in addition Td Done or successfully send so im trying to select the row to add the successful msg but i coudnt

in this link i'm showing the basic screen

https://repl.it/@ZaherZaki/SubduedProudMath