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react-dnd

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react-dnd

Drag and Drop for React

  • 9.5.1
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1.9M
decreased by-8.51%
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What is react-dnd?

The react-dnd package is a set of React utilities to help you build complex drag and drop interfaces while keeping your components decoupled. It provides a way to use drag and drop features in React by turning any React component into a draggable or a droppable area.

What are react-dnd's main functionalities?

Draggable Components

This feature allows you to turn any component into a draggable item. The useDrag hook is used to make components draggable and to monitor their state.

{"import { useDrag } from 'react-dnd';\n\nfunction DraggableComponent() {\n  const [{isDragging}, dragRef] = useDrag({\n    type: 'BOX',\n    collect: monitor => ({\n      isDragging: !!monitor.isDragging(),\n    }),\n  });\n\n  return (\n    <div ref={dragRef} style={{ opacity: isDragging ? 0.5 : 1 }}>\n      Drag Me\n    </div>\n  );\n}"}

Droppable Areas

This feature allows you to define areas where draggable items can be dropped. The useDrop hook is used to handle the drop events and to determine the state of the drop targets.

{"import { useDrop } from 'react-dnd';\n\nfunction DroppableComponent() {\n  const [{canDrop, isOver}, dropRef] = useDrop({\n    accept: 'BOX',\n    drop: () => ({ name: 'DroppableComponent' }),\n    collect: monitor => ({\n      isOver: monitor.isOver(),\n      canDrop: monitor.canDrop(),\n    }),\n  });\n\n  return (\n    <div ref={dropRef} style={{ backgroundColor: isOver ? 'green' : 'white' }}>\n      {canDrop ? 'Release to drop' : 'Drag a box here'}\n    </div>\n  );\n}"}

Custom Drag Layer

This feature allows you to create a custom drag layer that can be used to display a custom preview of the draggable item. The useDragLayer hook provides information about the item being dragged and its position.

{"import { useDragLayer } from 'react-dnd';\n\nfunction CustomDragLayer() {\n  const { isDragging, item, currentOffset } = useDragLayer((monitor) => ({\n    item: monitor.getItem(),\n    currentOffset: monitor.getSourceClientOffset(),\n    isDragging: monitor.isDragging(),\n  }));\n\n  if (!isDragging) {\n    return null;\n  }\n\n  return (\n    <div style={{ position: 'fixed', pointerEvents: 'none', left: currentOffset.x, top: currentOffset.y }}>\n      {/* Render custom drag layer here */}\n    </div>\n  );\n}"}

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Package last updated on 26 Nov 2019

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