angularjs - Angular: how to listen for response that you yourself don't make? -

in angular, there way listen response request don't make? i'm implementing file upload node.js, , i'm submitting form programmatically:

html:

<form enctype   =  "multipart/form-data"       action    =  "/blah/fileupload"       method    =  "post"           id    =  "upload_file" >   <input type="file" onchange="angular.element(this).scope().onfileselect(event)" name="bulk_uploads" /> </form> 

angular controller:

  $scope.onfileselect = function(event)   {     var form_elem = document.getelementbyid('upload_file');         form_elem.submit();   } 

the issue submitting form in fashion not return promise, , if submit form so:

$http.post('/blah/fileupload', { files : event.target.files }) 

then there no way uploaded files once hits node server (e.g. req.files empty).

is there way listen server's response 'blah/fileupload' submitting form programatically i'm doing, or going wrong way?

note: i'm hoping not use interceptors api sake of performance. if there's not major performance hit, please let me know!

there 2 main advice: 1) use external angular file upload library, example ng-file-upload 2) subscribe submit event controller:

document.getelementbyid('upload_file').addeventlistener('submit', your_handler)