AWS S3 static website ajax callback fails - ajax

Question

Recently I got to the point to host a static webpage with a subscription option on aws s3 while website development is undergoing. My static web page makes an ajax call to another RESTful service with an email of a subscriber as a parameter. When subscription is done I need to notify a subscriber. Here it seams an issue with the callback.
$.ajax({
type: 'GET',
url: 'http://www.my-domain.com/api/Subscribe?email=' + email
}).success(function (data) {
if (data) {
alert('Thank you for registering!');
}
});
After subscription is done ".success(" doesn't fire up. Response on the request is:
Reload the page to get source for: http://www.my-domain.com/api/Subscribe?email=john.smith#simplyemail.com
Does anyone know if it's an s3 feature or something else?

Answer 1

As per your description this seems to be related with CORS policy.
Look to "why CORS" as Amazon defines it:
In order to keep your content safe, your web browser implements something called the same origin policy.
The default policy ensures that scripts and other active content
loaded from one site or domain cannot interfere or interact with
content from another location without an explicit indication that this
is the desired behavior.
In certain cases, the developer of the original page might have
legitimate reasons to write code that interacts with content or
services at other locations. CORS provides the mechanism to allow the
developer to tell the browser to allow this interaction.
I understood that:
[...] ajax call to another RESTful service[...]
Means call to another server, and this may be blocked by Browser because of CORS.
References:
Mozilla
W3C