want to set direct login with facebook same this site how its possible

Question

i am creat one app id on facebook and set my localhost path like:-

App Domains:- localhost

Website with Facebook Login :- http://localhost/q2a/question2answer/index.php(my localhost path but not work if i try to login with facebook at home page) 

 

if i need any changes or more field fill in facebook app?

Comments

Same question by you within 1 hour.

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but what is the answer for me???