React: How do I render nested JSON data?

Question

I have this JSON data in another file:

  {
    "feed": [
      {
        "id": 1,
        "text": "Hey everyone I'm looking for help with my meditation, when does everyone do it?",
        "messages": [
          {
            "id": 1,
            "text": "I like to do it first thing in the morning and sometimes at night!",
          },
          {
            "id": 2,
            "text": "Thanks I'll try that!",
          }
        ]
      },
      {
        "id": 2,
        "text": "Have you tried a weighted blanket?",
        "messages": [
          {
            "id": 3,
            "text": "Yeah, they're great, I have the 10lb one!",
          },
          {
            "id": 4,
            "text": "Thank you!",
          }
        ]
      }
    ]
  }

I successfully rendered the two sets of data under "feed" using the map function by doing this:

<div>
  {Data.feed.map(feed => { 
    return(
      <>
        <h4>{ feed.id }</h4>
        <p>{ feed.text }</p>
      </>
    )})
  }
</div>

My question is: how do I also render the inner messages loop? I was told to use a nested .map and here's what I unsuccessfully attempted:

<div>
  {Data.feed.map(feed => {
    return {feed.messages.map(messages => {
      return (
        <>
          <h4>{ feed.id }</h4>
          <p>{ feed.text }</p>
          <h5>{ messages.id }</h5>
          <p>{ messages.text }</p>
        </>
      )}
    )}
  })}
</div>

Answer 1

You were actually close. You currently loop over the feed array only. You need to use a second map() to iterate over the messages too inside every item of the feed .

Check out the snippet below:

 function App() { return ( <div> {data.feed.map((feed) => ( <React.Fragment key={feed.id}> <h4>{feed.id}</h4> <p>{feed.text}</p> <ul> {feed.messages.map((message) => ( <li key={message.id}>{message.text}</li> ))} </ul> </React.Fragment> ))} </div> ); } const data = { feed: [ { id: 1, text: "Hey everyone I'm looking for help with my meditation, when does everyone do it?", messages: [ { id: 1, text: 'I like to do it first thing in the morning and sometimes at night,', }: { id, 2: text, "Thanks I'll try that,", }, ]: }, { id: 2? text, 'Have you tried a weighted blanket:': messages, [ { id: 3, text, "Yeah, they're great, I have the 10lb one:", }: { id, 4, text, 'Thank you,', }; ]. }, ]. }; ReactDOM.render(<App />, document.querySelector('#root'));

 <script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script> <div id="root"></div>