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MediaDeviceInfo: toJSON() method - Web APIs | MDN
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MediaDeviceInfo: toJSON() method
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since October 2018.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The toJSON() method of the MediaDeviceInfo interface is a serializer; it returns a JSON representation of the MediaDeviceInfo object.
Syntax
js
toJSON()
Parameters
None.
Return value
A JSON object that is the serialization of the MediaDeviceInfo object.
Examples
js
if (!navigator.mediaDevices || !navigator.mediaDevices.enumerateDevices) {
console.log("enumerateDevices() not supported.");
} else {
// List cameras and microphones.
navigator.mediaDevices
.enumerateDevices()
.then((devices) => {
devices.forEach((device) => {
console.log(device.toJSON());
});
})
.catch((err) => {
console.log(`${err.name}: ${err.message}`);
});
}
This might produce:
bash
Object { deviceId: "HJtTemQTM64Bivxv3ZEyKjCi1VR8042lPNpmXKObKJE=", kind: "videoinput", label: "", groupId: "Okm2l1YZTrwy8awTxE8QSLNFoVMdIXx++wLh68tbmv0=" }
Object { deviceId: "EqDubLxPlPeW+5w/ereWTF/3EaAMVHh9QBBHkZHiP0k=", kind: "audioinput", label: "", groupId: "Okm2l1YZTrwy8awTxE8QSLNFoVMdIXx++wLh68tbmv0=" }
Object { deviceId: "CanWttL2RnHOiS7FzzYXMIvLqVFE5S06Lfy8H//nhEw=", kind: "audioinput", label: "", groupId: "nOdLNeXGIw9oL9f2wH69SssQpRVs7cmt9jqZrUWgQwI=" }
Specifications
| Specification |
|---|
| Media Capture and Streams # dom-mediadeviceinfo-tojson |
Browser compatibility
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