EventManager

class

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)

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

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

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`

构造函数link

参数

方法link

addEventListener() link

参数

返回值

addGlobalEventListener() link

参数

返回值

getZone() link

参数

返回值

构造函数

方法

addEventListener()

addGlobalEventListener()

getZone()