User cannot login in Angular js with JWT and Node API - angularjs

Question

I am creating a Node api for user login and am using JSON web Token for authentication.
apiRoutes.put('/login', function(req, res){
User.findOne({name:req.body.name}, function(err, user){
if(err){throw err;}
else{
if(!user){
res.send({success:false, msg:'Auth Failed'});
}else{
user.comparePassword(req.body.password, function(err, isMatch){
if(isMatch && !err){
var token=jwt.encode(user, config.secret);
res.json({success:true, token:'JWT' +token});
}else{
res.send({success:false, msg:'Auth Fails:wrong password'});
}
});
}
}
});
});
Login Controller
app.controller('loginCtrl', function($http, $scope, $location, $cookieStore){
$scope.login=function(){
console.log($scope.loginUser);
$http.put('/api/login', $scope.loginUser).then(function(response){
console.log(response.data.token);
$cookieStore.put('token',response.data.token);
$scope.currentUser=$scope.loginUser.name;
alert("Successfully Loggedin");
}, function(err){
alert('Bad Login Credentials');
});
};
});
Login form HTML
<div class="post" ng-controller="loginCtrl">
<form method="post">
<div class="form-group" >
<label>Name</label>
<input type="text" class="form-control" name="name" ng-model="loginUser.name" />
</div>
<div class="form-group">
<label>Password</label>
<input type="password" class="form-control" name="password" ng-model="loginUser.password"/>
</div>
<div class="form-group">
<button class="btn btn-success" ng-click="login()" >Login</button>
</div>
</form>
</div>
The problem is that, when I click on the login button with the user credentials, it is always returning alert("successfully logged in");, despite the user credentials being right or wrong. I think there is something missing in the Angular Login controller, but I am unable to find out the error.
Can someone help me out to find the issue?
Thanks.

Answer 1

When you are sending error response try to send http status code in response. Just try to send
res.send(400, {success:false, msg:'Auth Failed'});