API 参考手册
API > @angular/platform-browser

EventManager

An injectable service that provides event management for Angular through a browser plug-in.

      
      class EventManager {
  constructor(plugins: EventManagerPlugin[], _zone: NgZone)
  addEventListener(element: HTMLElement, eventName: string, handler: Function): Function
  addGlobalEventListener(target: string, eventName: string, handler: Function): Function
  getZone(): NgZone
}

构造函数

Initializes an instance of the event-manager service.

constructor(plugins: EventManagerPlugin[], _zone: NgZone)
      
      constructor(plugins: EventManagerPlugin[], _zone: NgZone)
参数
plugins EventManagerPlugin[]
_zone NgZone

方法

addEventListener()

Registers a handler for a specific element and event.

addEventListener(element: HTMLElement, eventName: string, handler: Function): Function
      
      addEventListener(element: HTMLElement, eventName: string, handler: Function): Function
参数
element HTMLElement

The HTML element to receive event notifications.

eventName string

The name of the event to listen for.

handler Function

A function to call when the notification occurs. Receives the event object as an argument.

返回值

Function: A callback function that can be used to remove the handler.

addGlobalEventListener()

Registers a global handler for an event in a target view.

addGlobalEventListener(target: string, eventName: string, handler: Function): Function
      
      addGlobalEventListener(target: string, eventName: string, handler: Function): Function
参数
target string

A target for global event notifications. One of "window", "document", or "body".

eventName string

The name of the event to listen for.

handler Function

A function to call when the notification occurs. Receives the event object as an argument.

返回值

Function: A callback function that can be used to remove the handler.

getZone()

Retrieves the compilation zone in which event listeners are registered.

getZone(): NgZone
      
      getZone(): NgZone
参数

没有参数。

返回值

NgZone