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Class UpdateEvent<Value>

Type parameters

  • Value

Hierarchy

Index

Constructors

constructor

  • new UpdateEvent(value: Value, previous: Value): UpdateEvent

Properties

AT_TARGET

AT_TARGET: number

BUBBLING_PHASE

BUBBLING_PHASE: number

CAPTURING_PHASE

CAPTURING_PHASE: number

NONE

NONE: number

bubbles

bubbles: boolean

Returns true or false depending on how event was initialized. True if event goes through its target's ancestors in reverse tree order, and false otherwise.

cancelBubble

cancelBubble: boolean

cancelable

cancelable: boolean

Returns true or false depending on how event was initialized. Its return value does not always carry meaning, but true can indicate that part of the operation during which event was dispatched, can be canceled by invoking the preventDefault() method.

composed

composed: boolean

Returns true or false depending on how event was initialized. True if event invokes listeners past a ShadowRoot node that is the root of its target, and false otherwise.

currentTarget

currentTarget: EventTarget | null

Returns the object whose event listener's callback is currently being invoked.

defaultPrevented

defaultPrevented: boolean

Returns true if preventDefault() was invoked successfully to indicate cancelation, and false otherwise.

eventPhase

eventPhase: number

Returns the event's phase, which is one of NONE, CAPTURING_PHASE, AT_TARGET, and BUBBLING_PHASE.

isTrusted

isTrusted: boolean

Returns true if event was dispatched by the user agent, and false otherwise.

previous

previous: Value

returnValue

returnValue: boolean

srcElement

srcElement: EventTarget | null
deprecated

target

target: EventTarget | null

Returns the object to which event is dispatched (its target).

timeStamp

timeStamp: number

Returns the event's timestamp as the number of milliseconds measured relative to the time origin.

type

type: string

Returns the type of event, e.g. "click", "hashchange", or "submit".

value

value: Value

Static Event

Event: { constructor: any; AT_TARGET: number; BUBBLING_PHASE: number; CAPTURING_PHASE: number; NONE: number; prototype: Event }

Type declaration

  • constructor: function
    • new __type(type: string, eventInitDict?: EventInit): Event
    • Parameters

      • type: string
      • Optional eventInitDict: EventInit

      Returns Event

  • AT_TARGET: number
  • BUBBLING_PHASE: number
  • CAPTURING_PHASE: number
  • NONE: number
  • prototype: Event

Methods

composedPath

  • composedPath(): EventTarget[]
  • Returns the invocation target objects of event's path (objects on which listeners will be invoked), except for any nodes in shadow trees of which the shadow root's mode is "closed" that are not reachable from event's currentTarget.

    Returns EventTarget[]

initEvent

  • initEvent(type: string, bubbles?: undefined | false | true, cancelable?: undefined | false | true): void
  • Parameters

    • type: string
    • Optional bubbles: undefined | false | true
    • Optional cancelable: undefined | false | true

    Returns void

preventDefault

  • preventDefault(): void
  • If invoked when the cancelable attribute value is true, and while executing a listener for the event with passive set to false, signals to the operation that caused event to be dispatched that it needs to be canceled.

    Returns void

stopImmediatePropagation

  • stopImmediatePropagation(): void
  • Invoking this method prevents event from reaching any registered event listeners after the current one finishes running and, when dispatched in a tree, also prevents event from reaching any other objects.

    Returns void

stopPropagation

  • stopPropagation(): void
  • When dispatched in a tree, invoking this method prevents event from reaching any objects other than the current object.

    Returns void

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