interface PerformanceMark
extends PerformanceEntry
variable PerformanceMark
PerformanceMark is an abstract interface for PerformanceEntry objects
with an entryType of "mark". Entries of this type are created by calling
performance.mark() to add a named DOMHighResTimeStamp (the mark) to the
performance timeline.
Properties #
readonly
#prototype: PerformanceMark