#Performance API

Similar to Web Standards, Lynx provides the Performance API for obtaining performance-related information in the current page.

Developers can use the Performance interface to retrieve various runtime performance data.

The following core concepts need to be understood when using the Performance API:

• Entry Object
  lynx.performance is the entry object of the performance monitoring system, used to create performance observers.

• Performance Observer
  The PerformanceObserver interface monitors various types of performance events.

• Performance Events
  Represented by PerformanceEntry, containing basic information: event name and entryType. All performance events (e.g., application initialization duration, page loading time) inherit from the PerformanceEntry interface and extend additional properties.