The toJSON() method of the URL interface returns a DOMString containing the whole URL. It returns the same string as the href property.


This method is supposed to only be invoked by the JSON.stringify() method.


const url = new URL("https://developer.mozilla.org/en-US/docs/Web/API/URL/toJSON");
const obj = {key: url};

console.log(JSON.stringify(obj)); // logs '{"key": "https://developer.mozilla.org/en-US/docs/Web/API/URL/toJSON"}'


Specification Status Comment
The definition of 'toJSON()' in that specification.
Living Standard Initial definition.

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support ? 54 (54) ? ? ?
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support ? ? 54.0 (54) ? ? ? ? ?

Document Tags and Contributors

 Contributors to this page: chrisdavidmills, ziyunfei
 Last updated by: chrisdavidmills,