Cross-Origin Resource Sharing (CORS) Header

Crossdomain access can be enabled in JavaScript with a mechanism similar to that in Flash. Instead of hosting a crossdomain.xml file though, crossdomain access is enabled per file, through an additional HTTP response header:

Access-Control-Allow-Origin: *

CORS is a more modern equivalent to JSONP for cross-domain XmlHttpRequests(AJAX) with options to limit domains, subdomains and ports.

Initial browser support:

  • Firefox 3.5
  • Chrome 4
  • Safari 3.2
  • MSIE 8

REFERENCES:

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