{"json_modified": "2016-08-11T15:25:47.857249", "uuid": "7090a8a3-578c-4807-bfac-91365fbc2213", "title": "PerformanceObserverEntryList.getEntriesByType()", "url": "/en-US/docs/Web/API/PerformanceObserverEntryList/getEntriesByType", "tags": ["PerformanceObserverEntryList", "Web Performance", "Reference", "API", "Method"], "translations": [], "modified": "2016-08-11T15:25:48", "label": "PerformanceObserverEntryList.getEntriesByType()", "localization_tags": [], "locale": "en-US", "id": 168589, "last_edit": "2016-08-11T15:25:41", "summary": "The <strong><code>getEntriesByType()</code></strong> method of the <a href=\"/en-US/docs/Web/API/PerformanceObserverEntryList\" title=\"The PerformanceObserverEntryList interface is a list of peformance events that were explicitly observed via the observe() method.\"><code>PerformanceObserverEntryList</code></a> returns a list of explicitly <em>observed</em> <a href=\"/en-US/docs/Web/API/PerformanceEntry\" title=\"The PerformanceEntry object encapsulates a single performance metric that is part of the performance timeline. A performance entry can be directly created by making a performance mark or measure (for example by calling the mark() method) at an explicit point in an application. Performance entries are also created in indirect ways such as loading a resource (such as an image).\">performance entry</a> objects for a given <a href=\"/en-US/docs/Web/API/PerformanceEntry/entryType\" title=\"The entryType property returns the performance entry's type. The valid entryType values are:\">performance entry type</a>. The list's members are determined by the set of <a href=\"/en-US/docs/Web/API/PerformanceEntry/entryType\" title=\"The entryType property returns the performance entry's type. The valid entryType values are:\">entry types</a> specified in the call to the <a href=\"/en-US/docs/Web/API/PerformanceObserver/observe\" title=\"The observe() method of the PerformanceObserver interface is used to specify the set of performance interface types to observe. The performance observer's callback function will be invoked when a performance entry is recorded for one of the specified types.\"><code>observe()</code></a> method. The list is available in the observer's callback function (as the first parameter in the callback).", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Parameters", "title": "Parameters"}, {"id": "Return_Value", "title": "Return value"}, {"id": "Example", "title": "Example"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}], "slug": "Web/API/PerformanceObserverEntryList/getEntriesByType", "review_tags": []}