The takeRecords()
method of the PerformanceObserver
interface returns the current list of performance entries
stored in the performance observer, emptying it out.
PerformanceObserver.takeRecords()
Syntax
takeRecords()
Parameters
None.
Return value
A list of PerformanceEntry
objects.
Examples
var observer = new PerformanceObserver(function(list, obj) { var entries = list.getEntries(); for (var i=0; i < entries.length; i++) { // Process "mark" and "frame" events } }); observer.observe({entryTypes: ["mark", "frame"]}); var records = observer.takeRecords(); console.log(records[0].name); console.log(records[0].startTime); console.log(records[0].duration);
Specifications
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
takeRecords |
65
|
79
|
60
|
No
|
52
|
15
|
65
|
65
|
60
|
47
|
15
|
9.0
|
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https://developer.mozilla.org/en-US/docs/Web/API/PerformanceObserver/takeRecords