Hi Vishnu,
modify the
dataType: "json"
as
dataType: "html"
In the Webmethod, it is not returning any json data, instead its just a bool. When it comes to js, we dont have such dataType in Ajax calls.
So, once look at that, and play a little with the debugger in the success property function. Also, try to return a string from the WebMethod.
It should help you. Let me know if this helped you or not.
Happy coding..!
Thank you,
Vamsi