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Build a Kanban board with drag and drop

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01

Understand the problem

Build a Trello-style board where cards drag between columns.

ReactDrag and DropState
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Building a Kanban Board (drag & drop) in React

Mental model: Cards live in a flat list, each tagged with a col. Columns are derived by filtering. Drag-and-drop uses the native HTML5 API: dragstart stashes the card id in dataTransfer; a column's dragover (with preventDefault) marks it a drop target; `d

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04

React solution

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import React from 'react';
import Kanban from './src/Kanban';

export default function App() {
  return (
    <div style={{ fontFamily: 'sans-serif', padding: 20 }}>
      <h1>Kanban Demo</h1>
      <p style={{ color: '#666' }}>Drag cards between columns.</p>
      <Kanban />
    </div>
  );
}
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