Outputting an Array of Objects in React

Let's say we have an array of objects with products:

jsxconst prods = [
  {name: 'product1', cost: 100},
  {name: 'product2', cost: 200},
  {name: 'product3', cost: 300},
];

function App() {
  
}

Let's list each product in its own paragraph:

jsxfunction App() {
  const res = prods.map(function(item) {
    return <p>{item.name} {item.cost}</p>;
  });
  
  return <div>
    {res}
  </div>;
}

You can put the name and price of the product in a separate tag, for example, like this:

jsxfunction App() {
  const res = prods.map(function(item) {
    return <p>
      <span>{item.name}</span>:
      <span>{item.cost}</span>
    </p>;
  });
  
  return <div>
    {res}
  </div>;
}

Let's not forget to add the key attribute:

jsxfunction App() {
  const res = prods.map(function(item, index) {
    return <p key={index}>
      <span>{item.name}</span>:
      <span>{item.cost}</span>
    </p>;
  });
  
  return <div>
    {res}
  </div>;
}

jsxconst users = [
  {name: 'user1', surn: 'surn1', age: 30},
  {name: 'user2', surn: 'surn2', age: 31},
  {name: 'user3', surn: 'surn3', age: 32},
];