30-seconds-of-code/snippets/is-same-origin.md

title, tags, author, cover, firstSeen, lastUpdated

title	tags	author	cover	firstSeen	lastUpdated
Same-origin URLs	browser	chalarangelo	keyboard-tea	2021-04-22T08:27:41+03:00	2021-04-22T08:27:41+03:00

Checks if two URLs are on the same origin.

• Use URL.protocol and URL.host to check if both URLs have the same protocol and host.

const isSameOrigin = (origin, destination) =>
  origin.protocol === destination.protocol && origin.host === destination.host;

const origin = new URL('https://www.30secondsofcode.org/about');
const destination = new URL('https://www.30secondsofcode.org/contact');
isSameOrigin(origin, destination); // true
const other = new URL('https://developer.mozilla.org);
isSameOrigin(origin, other); // false