HTML <script> crossorigin Attribute

The crossorigin attribute on a <script> tag specifies that CORS is supported when loading an external script file from a third party server or domain.

Example

#

A crossorigin attribute on a <script> element.
With this attribute, the script element supports CORS. No credentials are sent when the script file is retrieved.

<script crossorigin="anonymous"
        src="/tutorial/script-defer.js"></script>

Note: this example script file is not retrieved from a third party server, but you get the idea.


Using crossorigin

The crossorigin attribute specifies that the script element supports CORS.

CORS stands for Cross Origin Resource Sharing.

CORS is a standard mechanism to retrieve files from a third party domain or server.

If specified, the script file request will be sent with or without credentials.

Note:  This attribute is only relevant when the script is retrieved from a third party server. Do not use this attribute when these files are on your own server.


Syntax

<script crossorigin="anonymous | use-credentials">

Values

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Value Description
anonymous or "" or blank A cross-origin request will be sent without credentials and performs basic HTTP authentication. This is the default. Note: crossorigin="anonymous", crossorigin="", and crossorigin are all the same.
use-credentials A cross-origin request will be sent with credentials, cookies, and certificate.

Browser support

Here is when crossorigin support started for each browser:

Chrome
30.0 Sep 2013
Firefox
13.0 Jun 2012
IE/Edge
18.0 Jan 2020
Opera
12.0 Jun 2012
Safari
1.0 Jan 2003

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