Dispaly message after every function completes.

Hi,
I have a requirment to show the intrmediate status of my process to user. as I have 3 function on a button click event which all are synchronus. Now I have to show a message to user every after a function completes on page.
let say 
Data saved completed .
Waiting for Responce from API x 
on a DIv which will be shown when a user clicks a button and will disappare as all the task get completed.

Thanks