widget.addEventListener(eventId, callback)

Start from API_LEVEL 2.0 . Please refer to API_LEVEL.

Register a listener to the UI widget and the given callback function will be executed when the specified event is triggered.

Type

(eventId: EventId, callback: (event: Event) => void) => void

Parameters

Parameter	Description	Type
eventId	Event type. (e.g., event.MOVE, event.CLICK_DOWN, etc.)	EventId
event	Event details, refer to different events.	object

EventId

Value	Description
event.MOVE	Slide
event.CLICK_DOWN	Press
event.CLICK_UP	Lift up
event.MOVE_IN	Move in
event.MOVE_OUT	Move out

Code example

import { createWidget, widget, event } from '@zos/ui'

const img_bkg = createWidget(widget.IMG)

img_bkg.addEventListener(event.CLICK_DOWN, function (info) {
  //Registering event listeners.
  console.log(info.x)
})