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Build a Toggle Switch

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01

Understand the problem

Build an on/off toggle switch with controlled state.

ReactStateUI
02

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03

Study the solution

Solve in

Building a controlled toggle switch in React involves managing its on state and providing a way to update it. The core idea is to let a parent component dictate the toggle's state and handle state changes, making the toggle reusable and predictable.

Step 1 — Define the Toggle Component Structure

Start by creatin

Solution ready — 2 min read

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04

React solution

Complete solutionRun Playground
import React, { useState } from 'react';
import ToggleSwitch from './src/ToggleSwitch';

const App = () => {
  const [isToggled, setIsToggled] = useState(false);

  const handleToggle = () => {
    setIsToggled((prev) => !prev);
  };

  return (
    <div style={{ padding: '20px', fontFamily: 'sans-serif' }}>
      <h1>Toggle Switch Demo</h1>
      <ToggleSwitch isOn={isToggled} onToggle={handleToggle} />
      <p style={{ marginTop: '20px', fontSize: '18px' }}>Current State: <strong style={{ color: isToggled ? 'green' : 'red' }}>{isToggled ? 'ON' : 'OFF'}</strong></p>
    </div>
  );
};

export default App;
05

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