接口 WheelEvent

Events that occur due to the user moving a mouse wheel or similar input device.

interface WheelEvent {
    altKey: boolean;
    AT_TARGET: number;
    bubbles: boolean;
    BUBBLING_PHASE: number;
    button: number;
    buttons: number;
    cancelable: boolean;
    cancelBubble: boolean;
    CAPTURING_PHASE: number;
    clientX: number;
    clientY: number;
    composed: boolean;
    ctrlKey: boolean;
    currentTarget: null | EventTarget;
    defaultPrevented: boolean;
    deltaMode: number;
    deltaX: number;
    deltaY: number;
    deltaZ: number;
    detail: number;
    DOM_DELTA_LINE: number;
    DOM_DELTA_PAGE: number;
    DOM_DELTA_PIXEL: number;
    eventPhase: number;
    isTrusted: boolean;
    metaKey: boolean;
    movementX: number;
    movementY: number;
    NONE: number;
    offsetX: number;
    offsetY: number;
    pageX: number;
    pageY: number;
    relatedTarget: null | EventTarget;
    returnValue: boolean;
    screenX: number;
    screenY: number;
    shiftKey: boolean;
    srcElement: null | EventTarget;
    target: null | EventTarget;
    timeStamp: number;
    type: string;
    view: null | Window;
    which: number;
    x: number;
    y: number;
    composedPath(): EventTarget[];
    getModifierState(keyArg: string): boolean;
    initEvent(type: string, bubbles?: boolean, cancelable?: boolean): void;
    initMouseEvent(typeArg: string, canBubbleArg: boolean, cancelableArg: boolean, viewArg: Window, detailArg: number, screenXArg: number, screenYArg: number, clientXArg: number, clientYArg: number, ctrlKeyArg: boolean, altKeyArg: boolean, shiftKeyArg: boolean, metaKeyArg: boolean, buttonArg: number, relatedTargetArg: null | EventTarget): void;
    initUIEvent(typeArg: string, bubblesArg?: boolean, cancelableArg?: boolean, viewArg?: null | Window, detailArg?: number): void;
    preventDefault(): void;
    stopImmediatePropagation(): void;
    stopPropagation(): void;
}

层级 (查看完整内容)

属性

altKey AT_TARGET bubbles BUBBLING_PHASE button buttons cancelable cancelBubble CAPTURING_PHASE clientX clientY composed ctrlKey currentTarget defaultPrevented deltaMode deltaX deltaY deltaZ detail DOM_DELTA_LINE DOM_DELTA_PAGE DOM_DELTA_PIXEL eventPhase isTrusted metaKey movementX movementY NONE offsetX offsetY pageX pageY relatedTarget returnValue screenX screenY shiftKey srcElement target timeStamp type view which x y

方法

composedPath getModifierState initEvent initMouseEvent initUIEvent preventDefault stopImmediatePropagation stopPropagation

属性

只读altKey

altKey: boolean

只读AT_TARGET

AT_TARGET: number

只读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.

只读BUBBLING_PHASE

BUBBLING_PHASE: number

只读button

button: number

只读buttons

buttons: number

只读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.

cancelBubble

cancelBubble: boolean

已被弃用

只读CAPTURING_PHASE

CAPTURING_PHASE: number

只读clientX

clientX: number

只读clientY

clientY: number

只读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.

只读ctrlKey

ctrlKey: boolean

只读currentTarget

currentTarget: null | EventTarget

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

只读defaultPrevented

defaultPrevented: boolean

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

只读deltaMode

deltaMode: number

只读deltaX

deltaX: number

只读deltaY

deltaY: number

只读deltaZ

deltaZ: number

只读detail

detail: number

只读DOM_DELTA_LINE

DOM_DELTA_LINE: number

只读DOM_DELTA_PAGE

DOM_DELTA_PAGE: number

只读DOM_DELTA_PIXEL

DOM_DELTA_PIXEL: number

只读eventPhase

eventPhase: number

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

只读isTrusted

isTrusted: boolean

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

只读metaKey

metaKey: boolean

只读movementX

movementX: number

只读movementY

movementY: number

只读NONE

NONE: number

只读offsetX

offsetX: number

只读offsetY

offsetY: number

只读pageX

pageX: number

只读pageY

pageY: number

只读relatedTarget

relatedTarget: null | EventTarget

returnValue

returnValue: boolean

已被弃用

只读screenX

screenX: number

只读screenY

screenY: number

只读shiftKey

shiftKey: boolean

只读srcElement

srcElement: null | EventTarget

已被弃用

只读target

target: null | EventTarget

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

只读timeStamp

timeStamp: number

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

只读type

type: string

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

只读view

view: null | Window

只读which

which: number

已被弃用

只读x

x: number

只读y

y: number

方法

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.

    返回 EventTarget[]

getModifierState

initEvent

  • initEvent(type, bubbles?, cancelable?): void

  • 参数

    • type: string
    • 可选bubbles: boolean
    • 可选cancelable: boolean

    返回 void

    已被弃用

initMouseEvent

  • initMouseEvent(typeArg, canBubbleArg, cancelableArg, viewArg, detailArg, screenXArg, screenYArg, clientXArg, clientYArg, ctrlKeyArg, altKeyArg, shiftKeyArg, metaKeyArg, buttonArg, relatedTargetArg): void

  • 参数

    • typeArg: string
    • canBubbleArg: boolean
    • cancelableArg: boolean
    • viewArg: Window
    • detailArg: number
    • screenXArg: number
    • screenYArg: number
    • clientXArg: number
    • clientYArg: number
    • ctrlKeyArg: boolean
    • altKeyArg: boolean
    • shiftKeyArg: boolean
    • metaKeyArg: boolean
    • buttonArg: number
    • relatedTargetArg: null | EventTarget

    返回 void

    已被弃用

initUIEvent

  • initUIEvent(typeArg, bubblesArg?, cancelableArg?, viewArg?, detailArg?): void

  • 参数

    • typeArg: string
    • 可选bubblesArg: boolean
    • 可选cancelableArg: boolean
    • 可选viewArg: null | Window
    • 可选detailArg: number

    返回 void

    已被弃用

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.

    返回 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.

    返回 void

stopPropagation

  • stopPropagation(): void

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

    返回 void

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