function SoapQuery(){
  var namespace = "http://tempuri.org/";
  var site = "http://server.com/Service.asmx";
  var xmlhttp = new ActiveXObject("Msxml2.ServerXMLHTTP.6.0");
  xmlhttp.setOption(2,  13056 );  /* if use standard proxy */
  var args,fname =  arguments.callee.caller.toString().match(/ ([^\(]+)/)[1]; /*Имя вызвавшей ф-ции*/
  try { args =   arguments.callee.caller.arguments.callee.toString().match(/\(([^\)]+)/)[1].split(",");  
    } catch (e) { args = Array();};
  xmlhttp.open('POST',site,true);  
  var i, ret = "", q = '<?xml version="1.0" encoding="utf-8"?>'+
   '<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">'+
   '<soap:Body><'+fname+ ' xmlns="'+namespace+'">';
  for (i=0;i<args.length;i++) q += "<" + args[i] + ">" + arguments.callee.caller.arguments[i] +  "</" + args[i] + ">";
  q +=   '</'+fname+'></soap:Body></soap:Envelope>';
            // Send the POST request
            xmlhttp.setRequestHeader("MessageType","CALL");
            xmlhttp.setRequestHeader("SOAPAction",namespace + fname);
            xmlhttp.setRequestHeader('Content-Type', 'text/xml');
            //WScript.Echo("Запрос XML:" + q);
            xmlhttp.send(q);
     if  (xmlhttp.waitForResponse(5000)) ret = xmlhttp.responseText;
    return ret;
  };





function GetForm(prefix,post_vars){return SoapQuery();};
function SendOrder2(guid,order,fio,phone,mail){return SoapQuery();};

function SendOrder(guid,post_vars){return SoapQuery();};

function SoapQuery(){
  var namespace = "http://tempuri.org/";
  var site = "http://server.com/Service.asmx";
  var xmlhttp = new ActiveXObject("Msxml2.ServerXMLHTTP.6.0");
  xmlhttp.setOption(2,  13056 );  /* if use standard proxy */
  var args,fname =  arguments.callee.caller.toString().match(/ ([^\(]+)/)[1]; /*Имя вызвавшей ф-ции*/
  try { args =   arguments.callee.caller.arguments.callee.toString().match(/\(([^\)]+)/)[1].split(",");  
    } catch (e) { args = Array();};
  xmlhttp.open('POST',site,true);  
  var i, ret = "", q = '<?xml version="1.0" encoding="utf-8"?>'+
   '<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">'+
   '<soap:Body><'+fname+ ' xmlns="'+namespace+'">';
  for (i=0;i<args.length;i++) q += "<" + args[i] + ">" + arguments.callee.caller.arguments[i] +  "</" + args[i] + ">";
  q +=   '</'+fname+'></soap:Body></soap:Envelope>';
            // Send the POST request
            xmlhttp.setRequestHeader("MessageType","CALL");
            xmlhttp.setRequestHeader("SOAPAction",namespace + fname);
            xmlhttp.setRequestHeader('Content-Type', 'text/xml');
            //WScript.Echo("Запрос XML:" + q);
            xmlhttp.send(q);
     if  (xmlhttp.waitForResponse(5000)) ret = xmlhttp.responseText;
    return ret;
  };





function GetForm(prefix,post_vars){return SoapQuery();};
function SendOrder2(guid,order,fio,phone,mail){return SoapQuery();};

function SendOrder(guid,post_vars){return SoapQuery();};

浏览器处理XMLHttpRequest的方式有很多怪癖，这段JS代码可以在所有浏览器上工作: https://github.com/ilinsky/xmlhttprequest

这段JS代码将XML转换为易于使用的JavaScript对象: http://www.terracoder.com/index.php/xml-objectifier

上面的JS代码可以包含在页面中，以满足您没有外部库的需求。

var symbol = "MSFT"; 
var xmlhttp = new XMLHttpRequest();
xmlhttp.open("POST", "http://www.webservicex.net/stockquote.asmx?op=GetQuote",true);
xmlhttp.onreadystatechange=function() {
 if (xmlhttp.readyState == 4) {
  alert(xmlhttp.responseText);
  // http://www.terracoder.com convert XML to JSON 
  var json = XMLObjectifier.xmlToJSON(xmlhttp.responseXML);
  var result = json.Body[0].GetQuoteResponse[0].GetQuoteResult[0].Text;
  // Result text is escaped XML string, convert string to XML object then convert to JSON object
  json = XMLObjectifier.xmlToJSON(XMLObjectifier.textToXML(result));
  alert(symbol + ' Stock Quote: $' + json.Stock[0].Last[0].Text); 
 }
}
xmlhttp.setRequestHeader("SOAPAction", "http://www.webserviceX.NET/GetQuote");
xmlhttp.setRequestHeader("Content-Type", "text/xml");
var xml = '<?xml version="1.0" encoding="utf-8"?>' +
 '<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" ' +
                'xmlns:xsd="http://www.w3.org/2001/XMLSchema" ' +
                'xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">' + 
   '<soap:Body> ' +
     '<GetQuote xmlns="http://www.webserviceX.NET/"> ' +
       '<symbol>' + symbol + '</symbol> ' +
     '</GetQuote> ' +
   '</soap:Body> ' +
 '</soap:Envelope>';
xmlhttp.send(xml);
// ...Include Google and Terracoder JS code here...

其他两种选择:

JavaScript SOAP客户端: http://www.guru4.net/articoli/javascript-soap-client/en/ 从WSDL生成JavaScript: https://cwiki.apache.org/confluence/display/CXF20DOC/WSDL+to+Javascript

这里有一些很棒的例子(以及一个现成的JavaScript SOAP客户端!) http://plugins.jquery.com/soap/

检查自述文件，并注意同源浏览器限制。

托马斯:

JSON是前端使用的首选，因为我们可以方便地查找。因此，您不需要处理XML。因此，不使用库的SOAP非常麻烦。有人提到SOAPClient，这是一个很好的库，我们的项目就是从它开始的。然而，它有一些局限性，我们不得不重写大量的内容。它以SOAPjs的形式发布，支持向服务器传递复杂的对象，并包括一些示例代理代码以使用来自其他域的服务。

有人试过吗?https://github.com/doedje/jquery.soap

似乎很容易实现。

例子:

$.soap({
url: 'http://my.server.com/soapservices/',
method: 'helloWorld',

data: {
    name: 'Remy Blom',
    msg: 'Hi!'
},

success: function (soapResponse) {
    // do stuff with soapResponse
    // if you want to have the response as JSON use soapResponse.toJSON();
    // or soapResponse.toString() to get XML string
    // or soapResponse.toXML() to get XML DOM
},
error: function (SOAPResponse) {
    // show error
}
});

会导致

<soap:Envelope
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <helloWorld>
        <name>Remy Blom</name>
        <msg>Hi!</msg>
    </helloWorld>
  </soap:Body>
</soap:Envelope>