http loading interceptor in AngularJs

http-loading-interceptor

# Define new module
angular.module('http-loading-interceptor')

  # Add filter at request send time
  .config(['$httpProvider', ($httpProvider) ->
    interceptor = (data, headersGetter) ->
      alert("loading...")
      data
    $httpProvider.defaults.transformRequest.push(interceptor)
  ])

  # Add filter at response received time
  .config(['$httpProvider', ($httpProvider) ->
    interceptor = ['$q', '$window', ($q, $window) ->
      success = (response) -> 
        alert("loaded")
        response
      error = (response) ->
        alert("loaded")
        $q.reject(response)
      return (promise) -> promise.then(success, error)        
    ]
    $httpProvider.responseInterceptors.push(interceptor)
  ])