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JavaScript DataView - beforeDrag Event

fires before dragging of an item has started

beforeDrag: (data: object, events: MouseEvent, ghost: HTMLElement) => void | boolean;

• data: object - data object. It contains the following parameters:
  • start: string | number - the id of an item, from which the dragging process has started
  • source: array - an array with ids of dragged items
  • target: string | number - the id of a potential target item
• events: MouseEvent - a native HTML event object
• ghost: HTMLElement - an HTML element

Return false to block dragging of an item; otherwise, true.

Example

dataview.events.on("beforeDrag", function(data, events) {
    // your logic here
    return false;
});

Related sample: Dataview. Events

added in v7.0

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