The event mechanism of node. js

Eventemitter class

method name and parameter	Description	parameter Description
AddListener (Event,listener)	Binds an event handler to the specified event	Parameter one is the event name, parameter two is the event handler function
On (Event,listener)	Event handler function (AddListener alias) for the specified event binding
Once (Event,listener)	Specifies a time-processing function that executes only once for the specified event
RemoveListener (Event,listener)	To dismiss an event handler function for a specified event
Removealllisteners ([Event])	Dismiss all event handlers for the specified event
Setmaxlisteners (N)	Specify the maximum number of event handler functions	n represents the maximum number of bindable processing events
Listeners (event)	Gets all event handler functions for the specified event
Emit (event,[arg1],[arg2],[...])	To trigger a specified event manually

The event mechanism of node. js