PerformanceObserverEntryList 类
PerformanceObserverEntryList
类用于提供对传给 PerformanceObserver
的 PerformanceEntry
实例的访问。
此类的构造函数不会暴露给用户。
The PerformanceObserverEntryList
class is used to provide access to the
PerformanceEntry
instances passed to a PerformanceObserver
.
The constructor of this class is not exposed to users.