TrustedScriptURL: toJSON() method

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.

Note: This feature is available in Web Workers.

The toJSON() method of the TrustedScriptURL interface returns a JSON representation of the stored data.

Syntax

js
toJSON()

Parameters

None.

Return value

A string containing a JSON representation of the stored data.

Examples

The constant sanitized is an object created via a Trusted Types policy. The toString() method returns a string to safely use to load a third party script.

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

Specifications

Specification
Trusted Types
# dom-trustedscripturl-tojson

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
toJSON
Chrome – Full support
Chrome 90 (Release date: 2021-04-13)
footnote Full support
Edge – Full support
Edge 90 (Release date: 2021-04-15)
footnote Full support
Firefox – Full support
Firefox 148 (Release date: 2026-02-24)
footnote Full support
Opera – Full support
Opera 76 (Release date: 2021-04-28)
footnote Full support
Safari – Full support
Safari 26 (Release date: 2025-09-15)
footnote Full support
Chrome Android – Full support
Chrome Android 90 (Release date: 2021-04-13)
footnote Full support
Firefox for Android – Full support
Firefox for Android 148 (Release date: 2026-02-24)
footnote Full support
Opera Android – Full support
Opera Android 64 (Release date: 2021-05-25)
footnote Full support
Safari on iOS – Full support
Safari on iOS 26 (Release date: 2025-09-15)
footnote Full support
Samsung Internet – Full support
Samsung Internet 15 (Release date: 2021-08-13)
footnote Full support
WebView Android – Full support
WebView Android 90 (Release date: 2021-04-13)
footnote Full support
WebView on iOS – Full support
WebView on iOS 26 (Release date: 2025-09-15)
footnote Full support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support