PressureObserver: knownSources static property
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The static knownSources
read-only property of the PressureObserver
interface returns an array of the source
values supported by the user agent in alphabetical order.
Note: The list of supported sources varies per browser, operating system, and hardware, and is evolving. This property is merely a hint about source types the user agents supports. Call observe()
and check for a NotSupportedError
to see if pressure observation is possible.
Value
An array of PressureRecord.source
values.
Examples
Using the console to see known sources
To find out which source
values a browser knows, enter PressureObserver.knownSources into the console. This will return an array of known sources.
PressureObserver.knownSources;
// returns ["cpu"] in Chrome 125
Specifications
Specification |
---|
Compute Pressure Level 1 # dom-pressureobserver-knownsources |
Browser compatibility
BCD tables only load in the browser