Can I make an XMLHttpRequest to another domain? Can I make an XMLHttpRequest to another domain? Nope, not right now. I believe I read that plans/design’s are in the works by standards groups for the future, so we can securely do this. Cross site scripting vulnerabilities would be rampant other wise. You cannot do cross domain request,e.g. from example1.com to example2.com through XMLHttpRequest or jQuery(which is a wrapper of XMLHttpRequest) due to security issue in client side(browser). That’s not possible due to the SOP (Same Origin Policy) that browser have these days to restrict XSS attacks. You will have to… Read more »

https://www.wautom.com/files/wautomlinks/testit.html

it works ONLY when you run it inside your web server, and the file is in the same domain.

https://www.w3schools.com/xml/xmlhttp_info.txt

https://www.w3schools.com/xml/xml_http.asp

this OK
xhttp.open(“GET”, “https://www.w3schools.com/js/default.asp”, true);

All modern browsers have a built-in XMLHttpRequest object to request data from a server.

The XMLHttpRequest Object
The XMLHttpRequest object can be used to request data from a web server.

The XMLHttpRequest object is a developers dream, because you can:

Update a web page without reloading the page
Request data from a server – after the page has loaded
Receive data from a server – after the page has loaded
Send data to a server – in the background

https://www.w3schools.com/xml/xml_http.asp