[javascript] How do I POST urlencoded form data with $http without jQuery?

Here is the way it should be (and please no backend changes ... certainly not ... if your front stack does not support application/x-www-form-urlencoded, then throw it away ... hopefully AngularJS does !

$http({
     method: 'POST',
     url: 'api_endpoint',
     headers: {'Content-Type': 'application/x-www-form-urlencoded'},
     data: 'username='+$scope.username+'&password='+$scope.password
 }).then(function(response) {
    // on success
 }, function(response) {
    // on error
 });

Works like a charm with AngularJS 1.5

People, let give u some advice:

  • use promises .then(success, error) when dealing with $http, forget about .sucess and .error callbacks (as they are being deprecated)

  • From the angularjs site here "You can no longer use the JSON_CALLBACK string as a placeholder for specifying where the callback parameter value should go."

If your data model is more complex that just a username and a password, you can still do that (as suggested above)

$http({
     method: 'POST',
     url: 'api_endpoint',
     headers: {'Content-Type': 'application/x-www-form-urlencoded'},
     data: json_formatted_data,
     transformRequest: function(data, headers) {
          return transform_json_to_urlcoded(data); // iterate over fields and chain key=value separated with &, using encodeURIComponent javascript function
     }
}).then(function(response) {
  // on succes
}, function(response) {
  // on error
});

Document for the encodeURIComponent can be found here

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