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Build a Tabs component

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01

Understand the problem

Build a tabbed interface that switches panels on selection.

ReactUIState
02

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Building a Tabs Component in React

Mental model: Tabs are a single source of truth — the active index — driving two things: which tab looks selected and which panel renders. The accessibility contract (role="tablist"/tab/tabpanel + arrow-key navigation + roving tabIndex) is what separates a real imple

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04

React solution

Complete solutionRun Playground
import React from 'react';
import Tabs from './src/Tabs';

const tabs = [
  { label: 'Overview', content: 'A tabs component lets users switch between related views in the same space.' },
  { label: 'Accessibility', content: 'Use role=tablist/tab/tabpanel, aria-selected, and arrow-key navigation.' },
  { label: 'Tips', content: 'Keep labels short and keep the selected panel mounted only when active.' },
];

export default function App() {
  return (
    <div style={{ fontFamily: 'sans-serif', padding: 20 }}>
      <h1>Tabs Demo</h1>
      <Tabs tabs={tabs} initial={0} />
    </div>
  );
}
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