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Exercise:Add the attribute that allows React to keep track of elements in lists.
function GroceryList() {
const items = [
{id: 1, name: 'bread'},
{id: 2, name: 'milk'},
{id: 3, name: 'eggs'}
];
return (
<>
<h1>Grocery List</h1>
<ul>
{items.map((item) => <li @(3)={item.id}>{item.name}</li>)}
</ul>
</>
);
}
const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(<GroceryList />);
function GroceryList() {
const items = [
{id: 1, name: 'bread'},
{id: 2, name: 'milk'},
{id: 3, name: 'eggs'}
];
return (
<>
<h1>Grocery List</h1>
<ul>
{items.map((item) => <li key={item.id}>{item.name}</li>)}
</ul>
</>
);
}
const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(<GroceryList />);
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