Summary
The 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
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|---|
Basic support | 6.0 | (Yes) | 7.0 (7.0) | 9.0 | 15.0 | No support |
Feature | Android | Edge | Firefox Mobile (Gecko) | Firefox OS | IE Phone | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|
Basic support | No support | (Yes) | 7.0 (7.0) | 1.0 (7.0) | 9.0 | 15.0 | No support |
See also
- The
PerformanceTiming
interface it belongs to.