how to pass angular 2 $scope variables into the Node.js server

<input ng-model="stickie_text" type="text" id="sticky_content" />

<form ng-submit="submit()" ng-controller="formCtrl">
    <input ng-model="stickie_text" type="text" id="sticky_content" />
    <button type="submit" id="add_sticky" value="add a new stickie!">new sticky</button> 
</form>

$scope.submit = function() {
    $http
        .post('/api/stickies', {what: to, put: here})
        .success(function(data){
            //what to do here
        })
        .error(function(data){
            console.log('Error: ' + data);
        });
};

app.post('/api/stickies',function(req,res){
    var test = req.body.stickie;
    db.run("INSERT INTO stickies (data) VALUES (?)", [ test ]);
});

$scope.submit = function() {
    $http
        .post('/api/stickies', {stickie: $scope.stickie_text})
        .success(function(data){
            //what to do here? it's up to you and the data you write from server.
        })
        .error(function(data){
            console.log('Error: ' + data);
        });
};

ng-model="formData.stickie"

$scope.submit = function() {
    $http
        .post('/api/stickies', $scope.formData)
        .success(function(data){
            //what to do here? it's up to you and the data you write from server.
        })
        .error(function(data){
            console.log('Error: ' + data);
        });
};

//app = express();
    app.get('/api/:paramID1/:paramID2',function(req, res){
        return res.json({ A: 5 });
    });

$http.get( "/api/1/abc").success(function( data ) {
  $scope.A= data; //from your sample;
  alert( "Load was performed. " + data );
});

var options = {};
options.api = {};
options.api.base_url = "<%= base_url %>";

module.exports = function(grunt) {
    grunt.initConfig({
        'template': {
            'process-js-template': {
                'options': {
                    'data': {
                        'base_url': 'http://myDomainName.tld:8080'
                        //Can also use 'base_url': grunt.option('base_url')
                        //If you wanted to take it from the CLI.
                        //EG: grunt default --base_url=http://myDomainName.tld:8080
                    }
                },
                'files': {
                    //The key being where you want to save the file.
                    'path/to/app.js': ['path/to/app.js.tpl']
                }
            }
        }
    });
    grunt.loadNpmTasks('grunt-template');
    grunt.registerTask('default', [
        'template'
    ]);
};