Yes, unless you specify otherwise, the Ajax call will use the same protocol that your page is using (SSL). To force your call to be secure, you can use absolute URLs that specify the protocol. For example, to force the example from the wiki to be secure, it would be changed from this:
Thank you, I feel better now knowing Ajax call will be sent using SSL.
These examples you prepared for Get and Post Ajax calls are very interesting and informative. I had not considered using the complete URL for the Ajax call to be sure SSL is used. Also, I had not considered using a Post call. I have read in the past that one should use Post calls whenever possible but I had not thought of using Post in the Ajax call.
Thank you so much for the support and good information.