PressureRecord
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.
Note: This feature is available in Web Workers, except for Service Workers.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The PressureRecord interface is part of the Compute Pressure API and describes the pressure trend of a source at a specific moment of transition.
Instance properties
PressureRecord.sourceRead only-
A string indicating the origin source from which the record is coming.
PressureRecord.stateRead only-
A string indicating the pressure state recorded.
PressureRecord.timeRead only-
A
DOMHighResTimeStampindicating the timestamp of the record.
Instance methods
PressureRecord.toJSON()-
Returns a JSON representation of the
PressureRecordobject.
Examples
Using the PressureRecord object
In the following example we log the properties of the PressureRecord object in the pressure observer callback.
function callback(records) {
const lastRecord = records[records.length - 1];
console.log(`Current pressure is ${lastRecord.state}`);
console.log(`Current pressure observed at ${lastRecord.time}`);
console.log(`Current pressure source: ${lastRecord.source}`);
}
try {
const observer = new PressureObserver(callback);
await observer.observe("cpu", {
sampleInterval: 1000, // 1000ms
});
} catch (error) {
// report error setting up the observer
}
Specifications
| Specification |
|---|
| Compute Pressure Level 1 # the-pressurerecord-interface |
Browser compatibility
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PressureRecord
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state
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time
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toJSON
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Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.