PerformanceTiming.connectStart

This interface of this property is deprecated in the Navigation Timing Level 2 specification. Please use the PerformanceNavigationTiming interface instead.

The legacy PerformanceTiming.connectStart read-only property returns an unsigned long long representing the moment, in miliseconds since the UNIX epoch, where the request to open a connection is sent to the network. If the transport layer reports an error and the connection establishment is started again, the last connection establisment start time is given. If a persistent connection is used, the value will be the same as PerformanceTiming.fetchStart.

Syntax

time = performanceTiming.connectStart;

Specifications

Specification Status Comment
Navigation Timing
The definition of 'PerformanceTiming.connectStart' in that specification.
Recommendation Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic support
Deprecated
Chrome Full support 6Edge Full support YesFirefox Full support 7IE Full support 9Opera Full support 15Safari No support NoWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 7Opera Android Full support 15Safari iOS No support NoSamsung Internet Android ?

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Deprecated. Not for use in new websites.
Deprecated. Not for use in new websites.

See also

Document Tags and Contributors

Contributors to this page: fscholz, abbycar, khushboo_Dwivedi, teoli
Last updated by: fscholz,