AngularJS dynamic $http authorization header -

i want application send request backend , need base authentication. have following code:

myapp.factory('apirequest', ['$http', 'accountservice', function($http, accountservice) {  var apiurl = 'https://web.appspot.com/_ah/api/server'; var apiver = 'v1'; var url = apiurl + '/' + apiver;  return {     getmessages: function(time_offset) {         var encodedcredentials = accountservice.generatebase64credentials();          // $http.defaults.headers.common['authorization'] = encodedcredentials; tried this, doesn't work         return $http.get(             url + '/message', {                 headers: {                     'authorization': accountservice.generatebase64credentials()                 },                 params: {                     recipient_id: '6305746161500160',                     recipient_type: 'circle',                     time_offset: time_offset ? time_offset : null                 }             }         )     } } }]); 

unfortunately every time obtain authorization header:

basic w29iamvjdcbpymply3rdoltvymply3qgt2jqzwn0xq== 

my function accountservice.generatebase64credentials return string: basic window.btoa(login:password), why work way? how can make work properly

your input base64 encoding incorrect. when have decoded string, returning "[object object]:[object object]" (excluding double quotes). please check input "window.btoa" function first.