Interface DataTransfer

    Used to hold the data that is being dragged during a drag and drop operation. It may hold one or more data items, each of one or more data types. For more information about drag and drop, see HTML Drag and Drop API.

    MDN Reference

    interface DataTransfer {
        dropEffect:
            | "link"
            | "none"
            | "copy"
            | "move";
        effectAllowed:
            | "link"
            | "all"
            | "none"
            | "copy"
            | "move"
            | "copyLink"
            | "copyMove"
            | "linkMove"
            | "uninitialized";
        files: FileList;
        items: DataTransferItemList;
        types: readonly string[];
        clearData(format?: string): void;
        getData(format: string): string;
        setData(format: string, data: string): void;
        setDragImage(image: Element, x: number, y: number): void;
    }

    Properties

    dropEffect effectAllowed files items types

    Methods

    clearData getData setData setDragImage

    Properties

    dropEffect

    dropEffect:
        | "link"
        | "none"
        | "copy"
        | "move"

    Returns the kind of operation that is currently selected. If the kind of operation isn't one of those that is allowed by the effectAllowed attribute, then the operation will fail.

    Can be set, to change the selected operation.

    The possible values are "none", "copy", "link", and "move".

    MDN Reference

    effectAllowed

    effectAllowed:
        | "link"
        | "all"
        | "none"
        | "copy"
        | "move"
        | "copyLink"
        | "copyMove"
        | "linkMove"
        | "uninitialized"

    Returns the kinds of operations that are to be allowed.

    Can be set (during the dragstart event), to change the allowed operations.

    The possible values are "none", "copy", "copyLink", "copyMove", "link", "linkMove", "move", "all", and "uninitialized",

    MDN Reference

    Readonlyfiles

    files: FileList

    Returns a FileList of the files being dragged, if any.

    MDN Reference

    Readonlyitems

    items: DataTransferItemList

    Returns a DataTransferItemList object, with the drag data.

    MDN Reference

    Readonlytypes

    types: readonly string[]

    Returns a frozen array listing the formats that were set in the dragstart event. In addition, if any files are being dragged, then one of the types will be the string "Files".

    MDN Reference

    Methods

    clearData

    • clearData(format?): void

    • Removes the data of the specified formats. Removes all data if the argument is omitted.

      MDN Reference

      Parameters

      • Optionalformat: string

      Returns void

    getData

    • getData(format): string

    • Returns the specified data. If there is no such data, returns the empty string.

      MDN Reference

      Parameters

      • format: string

      Returns string

    setData

    • setData(format, data): void

    • Adds the specified data.

      MDN Reference

      Parameters

      • format: string
      • data: string

      Returns void

    setDragImage

    • setDragImage(image, x, y): void

    • Uses the given element to update the drag feedback, replacing any previously specified feedback.

      MDN Reference

      Parameters

      Returns void

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