is there a way to use the new follower id, after he click on the follow button?
Web intent is nice - and since logged user is now a follower, why he can’t expose the id on the follow binded callback function?
Because you would then be able to identify the user using your website at that exact moment, which is not a detail they’re granting about themselves to you through the act of following your Twitter account.
but user just clicked on follow button. I believe I can use any of api libraries to search who has just followed me, but it would take unecessary resources.