docs/global-PerformanceObserver.md
The global PerformanceObserver class, as defined in Web specifications.
const observer = new PerformanceObserver(
(list, observer, options) => {
for (const entry of list.getEntries()) {
console.log(
'Received entry with type',
entry.entryType,
'and name',
entry.name,
'that started at',
entry.startTime,
'and took',
entry.duration,
'ms',
);
}
},
);
observer.observe({entryTypes: ['mark', 'measure']});
PerformanceObserver()See documentation in MDN.
supportedEntryTypesSee documentation in MDN.
Returns ['mark', 'measure', 'event', 'longtask', 'resource'].
observe()See documentation in MDN.
disconnect()See documentation in MDN.