Can't fetch data inside JSON what I want and what's the difference between this two?

Question

I've looked at many similar issues but couldn't find it. My purpose is to get the coin name and value. There are 2 endpoints in the Coinmarketcap API. First one that in the comment line gives me the output I want and it works , but I need the second one but not works. Both have the similar JSON structure.

First endpoint's output like this and JSON https://pastebin.com/xSS85Sbd

name: 'Bitcoin', price: 43973.31953486187,
name: 'Ethereum', price: 3097.8947589293316

Some errors I got on the 2nd and JSON https://pastebin.com/0sDXXwxm

coin.data.map is not a function
Cannot read properties of undefined (reading 'name')

I tried below and more and several console.log varieties with and without map but could not be succcessful.

coin.map(a => ({ name: a.name, price: a.quote.USD.price}))
coin.data.map(a => ({ name: a.name, price: a.quote.USD.price}))

async function getCoin(){
  try {
    //const response = await axios.get('https://pro-api.coinmarketcap.com/v1/cryptocurrency/listings/latest?limit=2', {
    const response = await axios.get('https://pro-api.coinmarketcap.com/v2/cryptocurrency/quotes/latest?symbol=BTC,ETH', {
      headers: {
        'X-CMC_PRO_API_KEY': 'key',
      },
    });

    const coin = response.data;
    const result = coin.data.map(a => ({ name: a.name } ))

    console.log(result);

    //return coin;

    } catch(ex) {
    console.log(ex);
    throw ex;
  }
}
getCoin()

I really wonder where I am wrong. Many thanks.

Answer 1

It can not run because they have different structure.

In 1st JSON data is array so you can use map

{
...
"data":[{"id":1,"...
...
}

In the 2nd data is object so it will throw error coin.data.map is not a function

{
...
"data":{"BTC"...
...
}

Update

You can get coin info like this

const result = Object.keys(coin.data).map(coinName => {
  const coinInfo = coin.data[coinName][0]
  return {
    name: coinInfo.name,
    price: coinInfo.quote.USD.price
  }
})
console.log('result: ', result)