Facebook oauth retrieve user Email

Question

I am using Facebook Javascript SDK to get oauth token and retrieve all the data from FB:

 function login() {     FB.api('/me', function (response) {                     alert('You have successfully logged in, ' + response.name + ", " + response.email + "!");      }); 

I retrieve all basic information (full name, work, school, ID..) but not EMAIL (response.email == undefined) !!

I know it's possible to access email within basic information (not asking for 'email' permissions), how do I do that?

Answer 1

You need get email explicitly as follows:

                    var url = '/me?fields=name,email';                     FB.api(url, function (response) {                         alert(response.name);                         alert(response.email);                     }); 

And to get the email address, email permission is needed. So the code might look like (there are other options like Register button, login button..)

            FB.login(function (response) {                 if (response.session) {                     var url = '/me?fields=name,email';                     FB.api(url, function (response) {                         alert(response.name);                         alert(response.email);                     });                 }                 else {                     alert("User did not login successfully");                 }             }, { scope: 'email' }); /* perms changed to scope */