« PerformanceTiming


The PerformanceTiming.responseStart read-only property returns an unsigned long long representing the moment, in miliseconds since the UNIX epoch, when the browser received the first byte of the response, from the server from a cache, of from a local resource.


time = performanceTiming.responseStart;


Specification Status Comment
Navigation Timing Recommendation Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 6.0 7.0 (7.0) 9.0 15.0 Not supported
Feature Android Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support Not supported 7.0 (7.0) 1.0 (7.0) 9.0 15.0 Not supported

See also

Document Tags and Contributors

Contributors to this page: kscarfone, teoli
Last updated by: kscarfone,