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use new coinmarketcap API

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Joshua Seigler 2016-05-08 16:23:26 -04:00
parent 7a98dcb3c4
commit 7afabe0f34
5 changed files with 163 additions and 81 deletions
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73
assets/scripts/app.js
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@ -15,22 +15,73 @@
httpRequest.send();
}
function makeCurrencyString(number) {
// return 3 significant figures or two decimal places, whichever is longer.
return (number.toPrecision(3).length > number.toFixed(2) ? number.toPrecision(3) : number.toFixed(2));
}
function updatePrices() {
// this requests the Dash price JSON and executes a callback with the parsed result once it is available
fetchJSONFile('https://coinmarketcap-nexuist.rhcloud.com/api/dash/price', function (data) {
var keys = Object.keys(data),
currencyListHTML = "";
for (var i = 0; i < keys.length; i++) {
var thisCurrency = keys[i];
var nextCurrency = keys[(i < keys.length - 1 ? i + 1 : 0)];
var currencyValue = data[keys[i]];
var currencyString = (currencyValue.toPrecision(3).length > currencyValue.toFixed(2) ? currencyValue.toPrecision(3) : currencyValue.toFixed(2));
currencyListHTML += '<input type="radio" name="currency" id="dash-ticker-currencies-' + thisCurrency + '"' + (i === 0 ? ' checked' : '') + ' /><label for="dash-ticker-currencies-' + nextCurrency + '"><span class="dash-ticker--price">' + currencyString + '</span> <span class="dash-ticker--currency">' + thisCurrency.toUpperCase() + '</span></label>';
fetchJSONFile('https://coinmarketcap-nexuist.rhcloud.com/api/dash/', function (data) {
var markup = '<div class="dash-ticker--title">Dash Price</div><div class="dash-ticker--wrapper"><div class="dash-ticker--usd">!price_usd</div><div class="dash-ticker--usd-change">!percent_change_24h</div><div class="dash-ticker--btc">!price_btc</div></div>';
/*
{
"symbol":"dash",
"position":"5",
"name":"Dash",
"market_cap":{
"usd":42443061.2936,
"eur":37214670.34508659,
"cny":275818610.627892,
"gbp":29413847.89462938,
"cad":54771497.307551995,
"rub":2800409354.958081,
"hkd":329415538.6572049,
"jpy":4545448180.293412,
"aud":57612508.5013617,
"btc":92474.6576981
},
"price":{
"usd":6.59801,
"eur":5.78522754014,
"cny":42.87753747356,
"gbp":4.572546292190001,
"cad":8.5145339647,
"rub":435.33921364181,
"hkd":51.20947810952,
"jpy":706.6152071500101,
"aud":8.95618496007,
"btc":0.0143757
},
"supply":"6432706",
"volume":{
"usd":300399,
"eur":263394.048786,
"cny":1952159.723844,
"gbp":208182.21458100004,
"cad":387655.89753,
"rub":19820440.472018998,
"hkd":2331502.379448,
"jpy":32171291.285198998,
"aud":407763.70539300004,
"btc":654.506
},
"change":"-3.01",
"timestamp":"1462626382.036"
}
*/
console.log(data);
if (data) {
markup = markup.replace(/!price_usd/g, makeCurrencyString(data.price.usd) + " USD");
markup = markup.replace(/!percent_change_24h/g, data.change + "%");
markup = markup.replace(/!price_btc/g, makeCurrencyString(data.price.btc) + " BTC");
document.querySelector('[data-dash-price-widget]').innerHTML = markup;
}
document.getElementById('dash-ticker--price-container').innerHTML = currencyListHTML;
});
}
updatePrices(); // update prices now
setInterval(updatePrices, 5 * 60 * 1000); // ...and every five minutes after this
})();
}());