WorkerNavigator: deviceMemory property
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Note: This feature is only available in Web Workers.
The deviceMemory
read-only
property of the WorkerNavigator
interface returns the approximate amount of
device memory in gigabytes.
The reported value is imprecise to curtail fingerprinting. It's approximated by rounding down to the nearest power of 2, then dividing that number by 1024. It is then clamped within lower and upper bounds to protect the privacy of owners of very low-memory or high-memory devices.
Value
A floating point number; one of 0.25
, 0.5
, 1
, 2
, 4
, 8
.
Examples
The following code can be run in a worker:
const memory = navigator.deviceMemory;
console.log(`This device has at least ${memory}GiB of RAM.`);
Specifications
Specification |
---|
Device Memory # sec-device-memory-js-api |
Browser compatibility
BCD tables only load in the browser
See also
Device-Memory
HTTP header