26 lines
719 B
Markdown
26 lines
719 B
Markdown
---
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title: Same-origin URLs
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tags: object
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author: chalarangelo
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cover: keyboard-tea
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firstSeen: 2021-04-22T08:27:41+03:00
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lastUpdated: 2021-04-22T08:27:41+03:00
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---
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Checks if two URLs are on the same origin.
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- Use `URL.protocol` and `URL.host` to check if both URLs have the same protocol and host.
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```js
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const isSameOrigin = (origin, destination) =>
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origin.protocol === destination.protocol && origin.host === destination.host;
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```
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```js
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const origin = new URL('https://www.30secondsofcode.org/about');
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const destination = new URL('https://www.30secondsofcode.org/contact');
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isSameOrigin(origin, destination); // true
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const other = new URL('https://developer.mozilla.org);
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isSameOrigin(origin, other); // false
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```
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