Why am I encountering an issue when attempting to make an XMLHTTPRequest from a JavaScript file to a web service on the same domain, resulting in:
Access-Control-Allow-Origin error stating that the origin is not allowed?
Switching mydomain.com to localhost resolves the problem, but I prefer to use mydomain.com. What changes should I make and why is this issue occurring despite being on the same domain?
The issue likely stems from the absence of 'www' in the URL. When testing with yourdomain.com instead of www.yourdomain.com, it falls under cross-domain communication which is restricted by default.
1) Check the request/response headers for any unusual access-control-allow-origin header from the server.
2) Consider not only the domain, but also the protocol (http vs https vs ftp etc), port (such as :8080), and possibly the path after the .com/
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