AJAX async postback is behaving differently... ?

Question

Hi All We have implemented the Ajax (using scriptmanager updatepanel) for one page and it has functionality like if I click on checkbox it should display the textbox. We have deployed the same to QA machine and when trying to use QA url and test the functionality its working as expected. But same code has been deployed into UAT and found different behavior. Here is diff both QA and UAT QA: If click on Check box then its hang up some time to execute the server side code and responded. UAT: If click on Check box then it's not hang up and use can enter any value on any control and once response done what ever i entered in other control data will be cleared. IS ajax will behave differently based on browsers or environments. Any ideas.. Please share...

Suthish Nair · Answer

Also check all the required libraries available on the other server.

Abhishek Jain · Answer

AJAX do not behave differently specially Update Panels. Only possibility of different behaviour can be that you are not having well-formed HTML in Update Panel some browser like IE are intelligent enough to ignore that minor errors but not all. Other issue can be of the network traffic and the availability of the servers please check if both servers are present with you on Local Network or it is possible that one of the Environment is local for you and the other one is available via Internet. Regards AJ