How to create a facebook add friend request

Using JavaScript :
 Things Required all u need to do i call

1. Call FB.init Method -
   

   FB.init({  appId  : 'YOUR_APP_ID',  frictionlessRequests : true });

2. To send request for purticular friends
1. function sendRequestToRecipients(){ FB.ui ({method: 'apprequests', message: 'My Request', to: '12345,23456' }, requestCallback); }

1.  To send request for all friends

1. function sendRequestViaMultiFriendSelector() {
     FB.ui({method: 'apprequests',
       message: 'My  Request'
     }, callbackfunction());
   }

    callbackfunction(response){

    alert(response);

   }