I am calling webmethod in asmx.cs file from ajax javascript by click event of button in asp.net c#. Now, in this circle button click event working fine, webmethod event also fired perfectly with passing correct data in parameter but after the webmethod call alert success getting undefined output.

I am calling webmethod in asmx.cs file from ajax javascript by click event of button in asp.net c#. Now, in this circle button click event working fine, webmethod event also fired perfectly but after the webmethod call alert is not getting in ajax success.