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

title, type, language, tags, author, cover, dateModified

title	type	language	tags	author	cover	dateModified
Same-origin URLs	snippet	javascript	browser	chalarangelo	leafy-screens	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