javascript - Returning a value from 'success' block in JS (Azure Mobile Service) -

i have rather simple getuser method i'm having trouble with. not familiar scopes , such in js giving me head ache. want fetch object database , return calling method:

function getuser(uid) {     var result = null;      var usertable = tables.gettable('users');      usertable.where({         userid: uid     }).read({         success: function (results) {             if (results.length > 0) {                 result = results[0];                 console.log('userid'+result.id);             }         }     });     console.log('userid-'+result.id); // undefined!!     return result; } 

also, returning inside success doesn't return getuser, function defined inside. tried "result = function(results)" stores defined function , not return value.

how supposed this?

i found solution elsewhere. in practice (to best of understanding), not possible within javascript asynchronous functions. need create recursion instead inside success handler.