How to map JSON Data in Javascript ES6

I would like to get the JSON data from Coinmarket.

I get the data but can't map the Data.

below my Code

    const p = document.querySelector('p');
    let endpoint = "https://api.coinmarketcap.com/v1/ticker/?convert=EUR";
    let coinsdata = [];
    fetch(endpoint)
    .then(blob => blob.json()
    .then(data => coinsdata.push(...data)));

    console.log(coinsdata);
    coinsdata.map(coindata => {
        return p.innerHTML = coindata.id;

    });

Answer

The issue with you code is that you have not properly managed the asynchronous xhr call. The code is written outside 'then' code block which is why you are not seeing anything.

The Solution:

let p = document.querySelector('p');
const endpoint = "https://api.coinmarketcap.com/v1/ticker/?convert=EUR";
fetch(endpoint)

    .then(blob => blob.json())
    .then(data => {
        data.map(obj => p.innerHTML += ("\n" + JSON.stringify(obj)) );
    });

This will print the objects in sequence. You can change the code as per your requirement. This was just to show the core idea.