PerformanceObserver.takeRecords()
The takeRecords() method of the
PerformanceObserver interface returns the current list of
performance entries stored in the performance
observer, emptying it out.
Syntax
var performanceEntryList = performanceObserver.takeRecords();
Parameters
None.
Return value
A list of PerformanceEntry objects.
Example
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
| Specification |
|---|
| Performance Timeline # dom-performanceobserver-takerecords |
Browser compatibility
BCD tables only load in the browser