(JavaScript) Magyar Nemzeti Bank (MNB) Get Currencies

The Magyar Nemzeti Bank (MNB) is the central bank of Hungary. In this role, its primary objective is to achieve and maintain price stability. The MNB website is available to visitors in both Hungarian and English. The MNB provides the Arfolyam (trans. Exchange Rate) API, which can be used to retrieve current and historic currency exchange rates. This service uses SOAP calls issued in XML format.

This example gets a list of currencies.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

var rest = new CkRest();

// URL: http://www.mnb.hu/arfolyamok.asmx
var bTls = false;
var port = 80;
var bAutoReconnect = true;
success = rest.Connect("www.mnb.hu",port,bTls,bAutoReconnect);
if (success !== true) {
    console.log("ConnectFailReason: " + rest.ConnectFailReason);
    console.log(rest.LastErrorText);
    return;
}

// --------------------------------------------------------------------------------
// Also see Chilkat's Online WSDL Code Generator
// to generate code and SOAP Request and Response XML for each operation in a WSDL.
// --------------------------------------------------------------------------------

var xml = new CkXml();
xml.Tag = "soapenv:Envelope";
xml.AddAttribute("xmlns:soapenv","http://schemas.xmlsoap.org/soap/envelope/");
xml.AddAttribute("xmlns:web","http://www.mnb.hu/webservices/");
xml.UpdateChildContent("soapenv:Header","");
xml.UpdateChildContent("soapenv:Body|web:GetCurrencies","");

rest.AddHeader("Content-Type","text/xml");
rest.AddHeader("SOAPAction","/webservices/MNBArfolyamServiceSoap/GetCurrencies");
rest.AddHeader("Accept","application/xml");

var sbRequestBody = new CkStringBuilder();
xml.GetXmlSb(sbRequestBody);
var sbResponseBody = new CkStringBuilder();
success = rest.FullRequestSb("POST","/arfolyamok.asmx",sbRequestBody,sbResponseBody);
if (success !== true) {
    console.log(rest.LastErrorText);
    return;
}

var respStatusCode = rest.ResponseStatusCode;
if (respStatusCode >= 400) {
    console.log("Response Status Code = " + respStatusCode);
    console.log("Response Header:");
    console.log(rest.ResponseHeader);
    console.log("Response Body:");
    console.log(sbResponseBody.GetAsString());
    return;
}

console.log("response status code = " + respStatusCode);

var xmlResponse = new CkXml();
xmlResponse.LoadSb(sbResponseBody,true);
console.log(xmlResponse.GetXml());

// The XML response contains this:
// <?xml version="1.0" encoding="utf-8" ?>
// <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
//     <s:Body>
//         <GetCurrenciesResponse xmlns="http://www.mnb.hu/webservices/" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
//             <GetCurrenciesResult>&lt;MNBCurrencies&gt;&lt;Currencies&gt;&lt;Curr&gt;HUF&lt;/Curr&gt;&lt;Curr&gt;EUR&lt;/Curr&gt;&lt;Curr&gt;AUD&lt;/Curr&gt; ... &lt;/MNBCurrencies&gt;</GetCurrenciesResult>
//         </GetCurrenciesResponse>
//     </s:Body>
// </s:Envelope>

// Get the GetCurrenciesResult
var resultEncoded = xmlResponse.GetChildContent("s:Body|GetCurrenciesResponse|GetCurrenciesResult");
console.log(resultEncoded);

// Entity decode the result to get XML.
var sbResult = new CkStringBuilder();
sbResult.Append(resultEncoded);
sbResult.EntityDecode();

// Load it into XML.
var xmlResult = new CkXml();
xmlResult.LoadSb(sbResult,true);
console.log(xmlResult.GetXml());

// The result is this:

// <?xml version="1.0" encoding="utf-8" ?>
// <MNBCurrencies>
//     <Currencies>
//         <Curr>HUF</Curr>
//         <Curr>EUR</Curr>
//         <Curr>AUD</Curr>
//         <Curr>BGN</Curr>
//         <Curr>BRL</Curr>
//         <Curr>CAD</Curr>
//         <Curr>CHF</Curr>
//         <Curr>CNY</Curr>
//         <Curr>CZK</Curr>
//         <Curr>DKK</Curr>
//         <Curr>GBP</Curr>
//         <Curr>HKD</Curr>
//         <Curr>HRK</Curr>
//         <Curr>IDR</Curr>
//         <Curr>ILS</Curr>
//         <Curr>INR</Curr>
//         <Curr>ISK</Curr>
//         <Curr>JPY</Curr>
//         <Curr>KRW</Curr>
//         <Curr>MXN</Curr>
//         <Curr>MYR</Curr>
//         <Curr>NOK</Curr>
//         <Curr>NZD</Curr>
//         <Curr>PHP</Curr>
//         <Curr>PLN</Curr>
//         <Curr>RON</Curr>
//         <Curr>RSD</Curr>
//         <Curr>RUB</Curr>
//         <Curr>SEK</Curr>
//         <Curr>SGD</Curr>
//         <Curr>THB</Curr>
//         <Curr>TRY</Curr>
//         <Curr>UAH</Curr>
//         <Curr>USD</Curr>
//         <Curr>ZAR</Curr>
//         <Curr>ATS</Curr>
//         <Curr>AUP</Curr>
//         <Curr>BEF</Curr>
//         <Curr>BGL</Curr>
//         <Curr>CYN</Curr>
//         <Curr>CSD</Curr>
//         <Curr>CSK</Curr>
//         <Curr>DDM</Curr>
//         <Curr>DEM</Curr>
//         <Curr>EEK</Curr>
//         <Curr>EGP</Curr>
//         <Curr>ESP</Curr>
//         <Curr>FIM</Curr>
//         <Curr>FRF</Curr>
//         <Curr>GHP</Curr>
//         <Curr>GRD</Curr>
//         <Curr>IEP</Curr>
//         <Curr>ITL</Curr>
//         <Curr>KPW</Curr>
//         <Curr>KWD</Curr>
//         <Curr>LBP</Curr>
//         <Curr>LTL</Curr>
//         <Curr>LUF</Curr>
//         <Curr>LVL</Curr>
//         <Curr>MNT</Curr>
//         <Curr>NLG</Curr>
//         <Curr>OAL</Curr>
//         <Curr>OBL</Curr>
//         <Curr>OFR</Curr>
//         <Curr>ORB</Curr>
//         <Curr>PKR</Curr>
//         <Curr>PTE</Curr>
//         <Curr>ROL</Curr>
//         <Curr>SDP</Curr>
//         <Curr>SIT</Curr>
//         <Curr>SKK</Curr>
//         <Curr>SUR</Curr>
//         <Curr>VND</Curr>
//         <Curr>XEU</Curr>
//         <Curr>XTR</Curr>
//         <Curr>YUD</Curr>
//     </Currencies>
// </MNBCurrencies>
//