screen_rotation
Copied to Clipboard
<!DOCTYPE html> <html> <head> <meta charset="UTF-8" /> <script src="https://unpkg.com/react@17.0.2/umd/react.development.js"></script> <script src="https://unpkg.com/react-dom@17.0.2/umd/react-dom.development.js"></script> <script src="https://unpkg.com/@babel/standalone@7.14.7/babel.min.js"></script> </head> <body> <div id="app"></div> <script type="text/babel"> function App() { const data = [ { id: 1, text: "Item 1" }, { id: 2, text: "Item 2" }, { id: 3, text: "Item 3" }, ]; const getStyle = (itemId) => { if (itemId === 1) { return { backgroundColor: "red", color: "white" }; } else if (itemId === 2) { return { backgroundColor: "blue", color: "white" }; } else { return { backgroundColor: "brown", color: "yellow" }; } }; return ( <div className="container"> <h3>React change style of element in map</h3> {data.map((item) => ( <div key={item.id} style={getStyle(item.id)}> <p>{item.text}</p> </div> ))} </div> ); } ReactDOM.render(<App />, document.getElementById("app")); </script> <style> #app { margin: 0 auto; width: 500px; text-align: center; box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.12), 0 2px 4px 0 rgba(0, 0, 0, 0.24); padding: 20px; } /* Styling for the heading */ .container h1 { font-size: 24px; text-align: center; margin-bottom: 20px; } /* Styling for the list */ .container ul { list-style: none; padding: 0; margin: 0; } /* Styling for the list items */ .container li { font-size: 18px; margin-bottom: 8px; } /* Styling for odd-indexed list items (alternating background) */ .container li:nth-child(odd) { background-color: #f9f9f9; padding: 8px; border-radius: 4px; } </style> </body> </html>