/*

<?php

   $url = 'https://www.mercadobitcoin.net/api/btc/ticker';

   $result = file_get_contents($url);

   $result = json_decode($result, true);

?>

*/

​

​

let currentBitcoinValue = 0;

let currentCurrencyValue = 0;

​

function fetchBitcoinTickerJSON() {

  const url = "https://www.mercadobitcoin.net/api/btc/ticker";

  fetch(url)

    .then(response => response.json())

    .then(data => {

        currentBitcoinValue = data.ticker.buy;

     });

}

​

function init() {

  fetchBitcoinTickerJSON();

}

​

function calcBitCoinValue() {

  const bitCoin = document.getElementById("bitcoin");

  const realValue = parseFloat(document.getElementById("currency").value);

  bitCoin.value = realValue/currentBitcoinValue;

}

​

init();

​

​