mirror of
https://github.com/seigler/Dash-price-widget
synced 2025-07-26 23:56:10 +00:00
87 lines
3 KiB
JavaScript
87 lines
3 KiB
JavaScript
(function () {
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"use strict";
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function fetchJSONFile(path, callback) {
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var httpRequest = (window.XMLHttpRequest) ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
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httpRequest.onreadystatechange = function () {
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if (httpRequest.readyState === 4) {
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if (httpRequest.status === 200) {
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var data = JSON.parse(httpRequest.responseText);
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if (callback) { callback(data); }
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}
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}
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};
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httpRequest.open('GET', path);
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httpRequest.send();
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}
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function makeCurrencyString(number) {
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// return 3 significant figures or two decimal places, whichever is longer.
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return (number.toPrecision(3).length > number.toFixed(2) ? number.toPrecision(3) : number.toFixed(2));
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}
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function updatePrices() {
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// this requests the Dash price JSON and executes a callback with the parsed result once it is available
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fetchJSONFile('https://coinmarketcap-nexuist.rhcloud.com/api/dash/', function (data) {
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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>';
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/*
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{
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"symbol":"dash",
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"position":"5",
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"name":"Dash",
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"market_cap":{
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"usd":42443061.2936,
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"eur":37214670.34508659,
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"cny":275818610.627892,
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"gbp":29413847.89462938,
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"cad":54771497.307551995,
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"rub":2800409354.958081,
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"hkd":329415538.6572049,
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"jpy":4545448180.293412,
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"aud":57612508.5013617,
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"btc":92474.6576981
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},
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"price":{
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"usd":6.59801,
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"eur":5.78522754014,
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"cny":42.87753747356,
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"gbp":4.572546292190001,
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"cad":8.5145339647,
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"rub":435.33921364181,
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"hkd":51.20947810952,
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"jpy":706.6152071500101,
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"aud":8.95618496007,
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"btc":0.0143757
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},
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"supply":"6432706",
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"volume":{
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"usd":300399,
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"eur":263394.048786,
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"cny":1952159.723844,
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"gbp":208182.21458100004,
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"cad":387655.89753,
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"rub":19820440.472018998,
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"hkd":2331502.379448,
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"jpy":32171291.285198998,
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"aud":407763.70539300004,
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"btc":654.506
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},
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"change":"-3.01",
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"timestamp":"1462626382.036"
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}
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*/
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console.log(data);
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if (data) {
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markup = markup.replace(/!price_usd/g, makeCurrencyString(data.price.usd) + " USD");
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markup = markup.replace(/!percent_change_24h/g, data.change + "%");
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markup = markup.replace(/!price_btc/g, makeCurrencyString(data.price.btc) + " BTC");
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document.querySelector('[data-dash-price-widget]').innerHTML = markup;
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}
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});
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}
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updatePrices(); // update prices now
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setInterval(updatePrices, 5 * 60 * 1000); // ...and every five minutes after this
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}());
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