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performance.PerformanceObserver

The PerformanceObserver interface is used to observe performance events and be notified of new performance entries as they are in the browser's performance timeline.

The PerformanceObserver interface is used to observe performance
events and be notified of new performance entries as they are
in the browser's performance timeline.
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constructorcljs

Constructor.

The PerformanceObserver() constructor creates a new performance.PerformanceObserver object with the given observer callback. The observer callback is invoked when performance entry events are recorded for the entry types that have been registered, via the web.observe() method.

callback A PerformanceObserverCallback callback that will be invoked when observed performance events are recorded. When the callback is invoked, its first parameter is a list of performance observer entries and the second parameter is the web.observer object.

See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/PerformanceObserver

Constructor.

The PerformanceObserver() constructor creates a new `performance.PerformanceObserver` object with the given observer callback. The observer callback is invoked when performance entry events are recorded for the entry types that have been registered, via the `web.observe()` method.

callback
A PerformanceObserverCallback callback that will be invoked when observed performance events are recorded. When the callback is invoked, its first parameter is a list of performance observer entries and the second parameter is the `web.observer` object.

See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/PerformanceObserver`
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disconnectcljs

(disconnect this)

Method.

The disconnect() method of the performance.PerformanceObserver is used to stop the performance observer from receiving any performance events.

performanceObserver.disconnect();

See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/disconnect

Method.

The disconnect() method of the `performance.PerformanceObserver`
is used to stop the performance observer from receiving any performance
events.

`performanceObserver.disconnect();`

See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/disconnect`
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observecljs

(observe this options)

Method.

The observe() method of the performance.PerformanceObserver is used to specify the set of performance entry types to observe.

observer.observe(options);

See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/observe

Method.

The observe() method of the `performance.PerformanceObserver`
is used to specify the set of performance entry types to observe.

`observer.observe(options);`

See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/observe`
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take-recordscljs

(take-records this)

Method.

The takeRecords() method of the performance.PerformanceObserver returns the current list of web.performance entries stored the performance observer, emptying it out.

var PerformanceEntry[] = performanceObserver.takeRecords();

See also: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/takeRecords

Method.

The takeRecords() method of the `performance.PerformanceObserver`
returns the current list of `web.performance entries` stored
the performance observer, emptying it out.

`var PerformanceEntry[] = performanceObserver.takeRecords();`

See also: `https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/takeRecords`
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