unloadEvent Property
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[This documentation is preliminary and is subject to change.]
Measures the time required to unload the previous document from the window object.
Syntax
[ iTimeMS = ] MSPerformanceTiming.unloadEvent
Possible Values
iTimeMS The time required to receive a response or 0if the document failed to load.The property is read-only. The property has no default value.
Remarks
When you evaluate the value of the unloadEvent property, make sure that the document has fully loaded; otherwise, the property might return a value of zero (
0).The time measured by the unloadEvent property is the difference between the unloadEventStart and the unloadEventEnd properties of the window.msPerformance.timing property.
For a list of other performance measures and the order in which they occur, see the MSPerformanceTimingMeasures object.
Example
The following example shows how to get the value of the unloadEvent property.
var sText = " MS to unload the previous document."; var iTime = window.msPerformance.timingMeasures.unloadEvent; alert( "The document required " + iTime.toString() + sText );
Standards Information
There is no public standard that applies to this property.
Applies To
MSPerformanceTiming
See Also