用react实现这个
时间: 2024-09-09 21:09:08 浏览: 70
在React中实现拖放功能和节点间的跳转链接,可以使用`react-dnd`和`react-beautiful-dnd`这两个流行库来处理拖拽功能,对于简单的链接跳转,可以直接利用`onClick`事件。
首先安装必要的依赖:
```bash
npm install react-dnd react-dnd-html5-backend react-beautiful-dnd
```
然后编写基本组件:
```jsx
import React, { useCallback, useState } from 'react';
import { useDrag, DropTarget } from 'react-draggable';
import { DragDropContext } from 'react-beautiful-dnd';
const Node = ({ link, id, ...rest }) => (
<div {...rest} onClick={() => window.location.href = link}>
<span>{id}</span>
</div>
);
const collect = monitor => ({
isDragging: monitor.isDragging(),
draggingIndex: monitor.getSource().getIndex(monitor.getItem()),
});
const DraggedNode = DragDropContext(
useDrag(collect),
)(Node);
const DraggableList = () => {
const [nodes, setNodes] = useState([{ id: '1', link: '#' + 'target1' }]);
// 用`useEffect`监听节点变化,更新状态
useEffect(() => {
if (collect.isDragging) {
const newNodes = [...nodes];
const draggedItem = nodes[collect.draggingIndex];
newNodes.splice(collect.draggingIndex, 1);
newNodes.unshift(draggedItem);
setNodes(newNodes);
}
}, [collect]);
return (
<ul>
{nodes.map((node, index) => (
<DraggedNode key={index} {...node} />
))}
</ul>
);
};
export default DraggableList;
```
这里我们创建了一个`DraggableList`组件,节点项是可拖动的,并且在点击时会跳转到指定链接。`react-dnd`主要用于拖动功能,`react-beautiful-dnd`则提供更高级的拖放管理。
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