PressureObserver: takeRecords() method
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 takeRecords()
method of the PressureObserver
interface returns the current list of pressure records stored in the pressure observer, emptying it out.
It is useful when you want to a stop observing a source but would like to be sure to get any records that have not yet been passed into the observer callback.
Syntax
takeRecords()
Parameters
None.
Return value
An Array
of PressureRecord
objects.
Examples
Taking records
The following example stores the current list of pressure records into records
and empties the pressure observer.
const observer = new PressureObserver(callback):
observer.observe("cpu");
const records = observer.takeRecords();
observer.disconnect(); // shut down observer now that we've taken records
if (records.length > 0) {
console.log(records[0].state);
console.log(records[0].time);
}
Specifications
Specification |
---|
Compute Pressure Level 1 # the-takerecords-method |
Browser compatibility
BCD tables only load in the browser