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What is Mean by Cross-Origins and Same-Origins? | HTTP Interview Question

Two URLs have the same origin if they have identical schemes, hosts, and ports. (RFC 6454)

These two URLs have the same origin:
  • http://example.com/foo.html
  • http://example.com/bar.html
These URLs have different origins than the previous two:
  • http://example.net – Different domain
  • http://example.com:9000/foo.html – Different port
  • https://example.com/foo.html – Different scheme
  • http://www.example.com/foo.html – Different subdomain
Internet Explorer does not consider the port when comparing origins.

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