responseStart property
The responseStart property must return the time immediately after the user agent receives the first byte of the response from the server, from relevant application caches, or from local resources.
![]() |
Syntax
| JavaScript | |
|---|
Property values
Type: Integer
An Integer value that represents the time immediately after the user agent receives the first byte of the response from the server, from relevant application caches, or from local resources.
Standards information
- Navigation Timing, Section 4.2
Remarks
The value reported by the responseStart property represents the number of milliseconds between the recorded time and midnight January 1, 1970 (UTC).
Windows Internet Explorer 9. This property is supported only for documents displayed in IE9 Standards mode. For more information, see Defining Document Compatibility.
Examples
The following example shows how to calculate the time required to receive a response from the hosting server.
var oTiming = window.performance.timing; var iTimeMS = oTiming.responseEnd - oTiming.responseStart;
See also
