{"json_modified": "2016-03-28T08:48:41.678817", "uuid": "c0a89bcc-135a-42c5-bdf6-60d6687e9ecd", "title": "PerformanceEntry.duration", "url": "/en-US/docs/Web/API/PerformanceEntry/duration", "tags": ["Web Performance", "Reference", "API", "Property"], "translations": [], "modified": "2016-02-29T14:16:04", "label": "PerformanceEntry.duration", "localization_tags": [], "locale": "en-US", "id": 168485, "last_edit": "2016-02-29T14:16:00", "summary": "The <strong><code>duration</code></strong> property returns a <a href=\"/en-US/docs/Web/API/DOMHighResTimeStamp\" title=\"The DOMHighResTimeStamp type is a double and is used to store a time value. The value could be a discrete point in time or the difference in time between two discrete points in time. The unit is milliseconds and should be accurate to 5 &#xB5;s (microseconds). However, if the browser is unable to provide a time value accurate to 5 microseconds (because, for example, due to hardware or software constraints), the browser can represent the value as a time in milliseconds accurate to a millisecond.\"><code>timestamp</code></a> that is the duration of the <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).\"><code>performance entry</code></a>.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Return_Value", "title": "Return value"}, {"id": "Example", "title": "Example"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}], "slug": "Web/API/PerformanceEntry/duration", "review_tags": ["technical"]}