The service you have deployed can be accessed by client programs; however, browsers that support cross-origin resource sharing can fail in this endeavor. In this segment of the tutorial, you attempt to access the service using such a browser for the purpose of observing the results.
We provide a test script, bookAJAXtest.html, that contains an AJAX request. You run this script in a browser that supports CORS.
In fact, this is the expected result. The reason nothing happened is that your service interface's Allowed Origin field is empty, preventing the service from recognizing that your AJAX request is originating from an allowed source. The request and response are still being sent, but your browser is preventing you from seeing the response.
In the next segment, you correct this problem by enabling any Web site or user to make an AJAX request to a deployed service.