The TaskAttributionTiming interface returns information about the work involved in a long task and its associate frame context. The frame context, also called the container, is the iframe, embed or object that is being implicated, on the whole, for a long task.

You usually work with TaskAttributionTiming objects when observing long tasks.

TaskAttributionTiming inherits from PerformanceEntry.

This interface extends the following PerformanceEntry properties for event timing performance entry types by qualifying them as follows:

PerformanceEntry.duration Read only Experimental

Always returns 0, as duration is not applicable for this interface.

PerformanceEntry.entryType Read only Experimental

Always returns taskattribution.

PerformanceEntry.name Read only Experimental

Always returns "unknown".

PerformanceEntry.startTime Read only Experimental

Always returns 0.

This interface also supports the following properties:

TaskAttributionTiming.containerType Read only Experimental

Returns the type of frame container, one of iframe, embed, or object.

TaskAttributionTiming.containerSrc Read only Experimental

Returns the container's src attribute.

TaskAttributionTiming.containerId Read only Experimental

Returns the container's id attribute.

TaskAttributionTiming.containerName Read only Experimental

Returns the container's name attribute.

TaskAttributionTiming.toJSON() Experimental

Returns a JSON representation of the TaskAttributionTiming object.

• PerformanceLongTaskTiming