performance.mark([name])
name
<string>
在性能时间轴中创建新的 PerformanceMark
条目。
PerformanceMark
是 PerformanceEntry
的子类,其 performanceEntry.entryType
始终为 'mark'
,而其 performanceEntry.duration
始终为 0
。
性能标记用于标记性能时间轴中的特定重要时刻。
name
<string>
Creates a new PerformanceMark
entry in the Performance Timeline. A
PerformanceMark
is a subclass of PerformanceEntry
whose
performanceEntry.entryType
is always 'mark'
, and whose
performanceEntry.duration
is always 0
. Performance marks are used
to mark specific significant moments in the Performance Timeline.