I have added the facebook recommend/like button in my application. All I want is when user click on the recommend/like button then the comments box should be pre-poulated with some default text.
Is it possible to do this? if so how can i achieve that?
If you’re talking about a facebook comments box: its not possible. Checkout this: Facebook Like Button with prepopulated Comment
Otherwise, if its a custom comment box, this will need to be done via javascript SDK. Check out the documentation for subscribing to like events on a page here.