pls refer

I want to upadate all id's '.followup' every 5 seconds.

The Jquery is run every 5 seconds which is happening properly , the way we want and expected

However when we want to derive the Id's 

for 1st Time I get the id's (displayed as Alert message) proper;y

however when thsi Jquery is run again after 5 seconds, 

I am not getting the Id's proper;y

what can be be reason and what corrections I need to make to avail correct Id's for the class '.followup'

pls pls help