React Js map jsx example | Array Map Method

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.2/umd/react.development.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.development.js"></script>
    
    <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
</head>
<body>
    <h3>React Js Rendering a dynamic list of checkboxes using map method</h3>
    <div id="app"></div>
    <script type="text/babel">
        const { useState } = React;

function App() {
            const options = ["apple", "banana", "orange"];

const [checked, setChecked] = useState(new Array(options.length).fill(false));

const handleChange = (index) => {
                const newChecked = [...checked];
                newChecked[index] = !checked[index];
                setChecked(newChecked);
                
            }

return (
                    <div>
                        
                        {options.map((option, index) => (
                            <div key={option}>
                                <input
                                    type="checkbox"
                                    checked={checked[index]}
                                    onChange={() => handleChange(index)}
                                />
                                <label>{option}</label>
                                
                            </div>
                        ))}
                    </div>
                );
            }

ReactDOM.render(<App />, document.getElementById('app'));
   </script>
</body>
</html>

 
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.2/umd/react.development.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.development.js"></script>
    <!---this is used to compile on run time--->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
</head>
<body>
    <h3>React Js Rendering a dynamic list of checkboxes using map method</h3>
    <div id="app"></div>
    <script type="text/babel">
        const { useState } = React;
​
        function App() {
            const options = ["apple", "banana", "orange"];
​
            const [checked, setChecked] = useState(new Array(options.length).fill(false));
​
            const handleChange = (index) => {
                const newChecked = [...checked];
                newChecked[index] = !checked[index];
                setChecked(newChecked);
                
            }
​
                return (
                    <div>
                        
                        {options.map((option, index) => (
                            <div key={option}>
                                <input
                                    type="checkbox"
                                    checked={checked[index]}
                                    onChange={() => handleChange(index)}
                                />
                                <label>{option}</label>
                                
                            </div>
                        ))}
                    </div>
                );
            }
       
​
        ReactDOM.render(<App />, document.getElementById('app'));
   </script>
</body>
</html>