I am getting list of books from third party services.
Wanna list the books in sorting order like ASC using slightly. is it possible..?? I am able to get the results but not in sorting order..
As of now sightly does not support list sorting.
Backend call to 3rd party - Process this in sling model
Frontend call to 3rd party - Use JS
HTL is a template language and cannot do much of data manipulation . So as Simone said you have to handle it either in client-side or server side . Getting Started with HTL
If you are retrieving serverside, you need to sort your list before listing with sightly markup (with JS or Java API you are using)