PressureObserver: takeRecords() method

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

js
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.

js
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