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("");
const obj = {key: url};

console.log(JSON.stringify(obj)); // logs '{"key": ""}'


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

Browser compatibility

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,