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GeezerVison is showing developer.mozilla.org — TrustedScriptURL - Web APIs | MDN

TrustedScriptURL

Baseline 2026
Newly available

Since February 2026, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

  • See full compatibility
  • Learn more

Note: This feature is available in Web Workers.

The TrustedScriptURL interface of the Trusted Types API represents a string that a developer can insert into an injection sink that will parse it as a URL of an external script. These objects are created via TrustedTypePolicy.createScriptURL() and therefore have no constructor.

The value of a TrustedScriptURL object is set when the object is created and cannot be changed by JavaScript as there is no setter exposed.

Instance methods

TrustedScriptURL.toJSON()

Returns a string representing the TrustedScriptURL object, which is the same value as TrustedScriptURL.toString(). Automatically called by JSON.stringify().

TrustedScriptURL.toString()

A string containing the sanitized URL.

Examples

The constant sanitized is an object created via a Trusted Types policy.

js
const sanitized = scriptPolicy.createScriptURL(
  "https://example.com/my-script.js",
);
console.log(sanitized); /* a TrustedScriptURL object */

Specifications

Specification
Trusted Types
# trused-script-url

Browser compatibility

See also

  • Prevent DOM-based cross-site scripting vulnerabilities with Trusted Types

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This page was last modified on Sep 28, 2026 by MDN contributors.

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