I am working on building a HTML5 app. I am getting both a GET request and OPTIONS request back when I am trying to do a simple fetch of a data store. 

Hi Pranav

Thank you a lot for this (and all other answers) I have posted, all very helpfull! I have tried many (big) cloud services so far and I can tell you: Kinvey offers the best easy-to-use and most flexible environment! 

1). PHP app
2). I am getting no errors back,-- just a option and get response 
3). 3.3.1

Example of my fetch code:

dow = dow;

            var allFetchedAvail = [];
            var availToday = [];
            var dataStore = Kinvey.DataStore.collection('avail');
            var stream = dataStore.find();

            stream.subscribe(function onNext(avail) {
                console.log('fetching');
                allFetchedAvail.push(avail);

                for (i = 0; i < avail.length; i++) {
                    if (avail[i].dayOfWeek !== dow) {
                        var employeeName = avail[i].user_id.name;
                        $('#name').append('<option val="' + employeeName + '">' + employeeName + '</option>');
                    }
                    // Does employee have partial day availabity
                    else if (avail[i].allDay === false) {
                        // var start   = avail[i].start;
                        // var end     = avail[i].end;
                        // console.log(start , end);
                    }
                }
            }, function onError(error) {
                console.error(error);
            }, function onComplete(entity) {
            });

I'm having the same problem, 1 year later (latest Kinvey release under Kinvey HTML ):

<script src="https://da189i1jfloii.cloudfront.net/js/kinvey-html5-sdk-3.10.2.min.js"></script>

...
var promise = Kinvey.User.login('<username>', '<password>')
        .then(function() {
            // Fetch games
            var dataStore = Kinvey.DataStore.collection('games');

            // Define query
            var query = new Kinvey.Query();
            query.equalTo('gameid', 12345);

            var stream = dataStore.find(query);

            console.log ("Before"); // Appears once
            stream.subscribe(function onNext(entities) {
                console.log ("get data"); // Appears twice
                console.log (entities); (( Appears twice ((1. empty array, 2. filled array)
            }, function onError(error) {
                // ...
            }, function onComplete() {
                var promise2 = Kinvey.User.logout()
                    .then(function() {
                        // ...
                    }).catch(function(error) {
                        // ...
                    });
            });
        })
        .catch(function(error) {
            console.log (error);
        });
});

Any idea why I got two return results? 

1. empty array

2. array with searched data