OriginLimited availability

An Origin object represents an origin, as in a scheme, hostname, and port. You can use it to make same-site and same-origin comparisons.

Not yet supported in all major browsers — check the table and provide a fallback.

Browser support

DesktopChrome

1–144Not supported

145+Supportedsince Feb 10, 2026

Current: 155

Edge

12–144Not supported

145+Supportedsince Feb 14, 2026

Current: 154

Firefox

✕Not supportedup to 157

Current: 157

Safari

1–26.4Not supported

26.5+Supportedsince May 11, 2026

Current: 27

MobileChrome Android

18–144Not supported

145+Supportedsince Feb 10, 2026

Current: 155

Firefox Android

✕Not supportedup to 157

Current: 157

Safari iOS

1–26.4Not supported

26.5+Supportedsince May 11, 2026

Current: 27

Not supported in Firefox, Firefox Android. Use feature detection below and provide a fallback (or a polyfill) for those browsers.

Full syntax and examples are on MDN — see the links below.

JS · check before using

if ("Origin" in globalThis) {
  // Origin is available
} else {
  // load a polyfill or use a fallback
}

Support for each part of the feature (6). The overall table above shows when the whole feature works.

Sub-feature	Chrome	Edge	Firefox	Safari	Chrome Android	Firefox Android	Safari iOS
Origin	145	145	✕	26.5	145	✕	26.5
Origin.Origin	145	145	✕	26.5	145	✕	26.5
Origin.from_static	145	145	✕	26.5	145	✕	26.5
Origin.isSameOrigin	145	145	✕	26.5	145	✕	26.5
Origin.isSameSite	145	145	✕	26.5	145	✕	26.5
Origin.opaque	145	145	✕	26.5	145	✕	26.5