Question

I’ve sensed a lot of ramble about easy cross-domain XmlHttpRequest methods with new HTML5 JS XHR techniques. Given the standard JavaScript XHR code below…

  var xhr=new XMLHttpRequest();
  xhr.open("GET",url,false);
  xhr.send();
  var output=xhr.responseXML;

…what would be the equivalent HTML5 XHR cross-domain-enabled code that would give the same output?

Answer 1

There’s nothing different from the JS perspective. The cross-domain authorization is handled by the browser on the HTTP level using CORS, so your server has to support cross-domain negotiation.