{"json_modified": "2016-03-28T08:29:08.105151", "uuid": "e18650de-cc08-4279-843d-9c8576a684c2", "title": "PerformanceTiming.requestStart", "url": "/en-US/docs/Web/API/PerformanceTiming/requestStart", "tags": ["PerformanceTiming", "Property", "Navigation Timing", "API", "Read-only"], "translations": [], "modified": "2015-02-22T10:50:58", "label": "PerformanceTiming.requestStart", "localization_tags": [], "locale": "en-US", "id": 81495, "last_edit": "2013-09-24T03:02:12", "summary": "The <code><strong>PerformanceTiming</strong></code><strong><code>.requestStart</code></strong> read-only property returns an <code>unsigned long long</code> representing the moment, in miliseconds since the UNIX epoch, when the browser sent the request to obtain the actual document, from the server or from a cache. If the transport layer fails after the start of the request and the connection is reopened, this property will be set to the time corresponding to the new request.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Summary", "title": "Summary"}, {"id": "Syntax", "title": "Syntax"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/API/PerformanceTiming/requestStart", "review_tags": []}