Why are my inputs not resetting? - html

Question

The below code generates several forms depending on data returned from the server. Everything generates fine, but after clicking on an AnswerOpenQuestion button the input does not clear/reset. What's going on here?
angularJs code:
var availableInterviewController = function($scope, $http) {
// define initial model
$scope.interviews = [];
// retrieve available interviews
$http.get('/api/UserInterviewsApi/AvailableInterviews')
.success(function(data) {
// update interviews
$scope.interviews = [];
$scope.interviews = data;
});
// define open question answer selection
$scope.Answer = "";
// define multiple choice selection
$scope.selectedChoice = "";
// define answer open question button
$scope.AnswerOpenQuestion = function() {
$scope.Answer = ans;
alert(q.Question + ' and ' + $scope.Answer);
$scope.Answer = ''; // <---This is not clearing/resetting the HTML form inputs
};
// define answer multiple choice button
$scope.AnswerMultipleChoice = function() {
//
};
};
// assign the new controller to the main angular app
myAngApp.controller('availableInterviewCtrl', availableInterviewController);
Html code:
<form class="form-group" ng-repeat="q in inter.Questions">
<fieldset style="display: inline-block;">
<legend>Question {{$index + 1}}</legend>
<!--Open Ended-->
<div class="form-group" ng-show="q.MultipleChoices.length === 0">
<label for="{{'quest-' + $index}}">
<strong class="text-info">{{q.Question}}</strong><br />
</label>
<input name="openQuestion" id="{{'quest-' + $index}}" type="text"
class="form-control" ng-model="Answer" />
<button ng-click="AnswerOpenQuestion()">Answer</button><br />
<span class="text-info">
asked by {{q.AskedByUserName ==
'Administrator' ? 'staff' : q.AskedByUserName}}
</span>
</div>
<!--Multiple Choice Question-->
<div class="form-group" ng-show="q.MultipleChoices.length > 0">
<label for="{{'quest-' + $index}}">
<strong class="text-info">{{q.Question}}</strong>
</label>
<div>
Select an answer:
<label ng-repeat="x in q.MultipleChoices">
<input name="currentChoice" type="radio" value="{{x.Id}}"
ng-model="selectedChoice" />
{{x.Choice}}
</label>
<button ng-click="AnswerMultipleChoice()">Answer</button><br />
<span class="text-info">
asked by {{q.AskedByUserName ==
'Administrator' ? 'staff' : q.AskedByUserName}}
</span>
</div>
</div>
</fieldset>
</form>
UPDATE - Solution
AngularJs:
// define open question answer selection
$scope.OpenAnswer = { Answer: '' };
// define answer open question button
$scope.AnswerOpenQuestion = function (q, ans) {
$scope.OpenAnswer.Answer = ans;
alert(q.Question + ' and ' + $scope.OpenAnswer.Answer);
// clear the input
$scope.OpenAnswer.Answer = '';
};
Html:
<input id="{{'quest-' + $index}}" type="text"
class="form-control" ng-model="OpenAnswer.Answer" />

Answer 1

Don't use the scope as a model instead make an object that wraps the data model and assign it to a property of the scope.
$scope.myModel = {Answer:''}
Also don't use value in most cases ngmodel is all you need for two way binding.
In js strings are immutable so the original reference is not being updated instead a new string is being made, the digest cycle won't see this as a change to the original string.