XML Add Child Tree

var success = false;

// Build the following XML:

// <?xml version="1.0" encoding="utf-8"?>
// <soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
//     <soap12:Body>
//         <cteDadosMsg xmlns="http://www.portalfiscal.inf.br/cte/wsdl/CTeStatusServicoV4">
// 	   </cteDadosMsg>
//     </soap12:Body>
// </soap12:Envelope>

var xml = new CkXml();
xml.Tag = "soap12:Envelope";
xml.AddAttribute("xmlns:xsi","http://www.w3.org/2001/XMLSchema-instance");
xml.AddAttribute("xmlns:xsd","http://www.w3.org/2001/XMLSchema");
xml.AddAttribute("xmlns:soap12","http://www.w3.org/2003/05/soap-envelope");
xml.UpdateAttrAt("soap12:Body|cteDadosMsg",true,"xmlns","http://www.portalfiscal.inf.br/cte/wsdl/CTeStatusServicoV4");

// We want to add the following XML as a sub-tree under the "cteDadosMsg" element.

// <consStatServCTe versao="4.00" xmlns="http://www.portalfiscal.inf.br/cte">
//     <tpAmb>2</tpAmb>
//     <cUF>43</cUF>
//     <xServ>STATUS</xServ>
// </consStatServCTe>

// Build the XML to be added as a child tree.

var xml2 = new CkXml();
xml2.Tag = "consStatServCTe";
xml2.AddAttribute("versao","4.00");
xml2.AddAttribute("xmlns","http://www.portalfiscal.inf.br/cte");
xml2.UpdateChildContent("tpAmb","2");
xml2.UpdateChildContent("cUF","43");
xml2.UpdateChildContent("xServ","STATUS");

// Add the child tree at the desired location:
// Temporarily point to the location where we wish to add the child tree.
success = xml.FindChild2("soap12:Body|cteDadosMsg");
if (success == false) {
    // Restore current location to the root.
    xml.GetRoot2();
    return;
}

success = xml.AddChildTree(xml2);
// Restore the current location to the root.
xml.GetRoot2();

// You can see now that the XML contain the child tree:

console.log(xml.GetXml());

// <?xml version="1.0" encoding="utf-8"?>
// <soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
//     <soap12:Body>
//         <cteDadosMsg xmlns="http://www.portalfiscal.inf.br/cte/wsdl/CTeStatusServicoV4">
//             <consStatServCTe versao="4.00" xmlns="http://www.portalfiscal.inf.br/cte">
//                 <tpAmb>2</tpAmb>
//                 <cUF>43</cUF>
//                 <xServ>STATUS</xServ>
//             </consStatServCTe>
//         </cteDadosMsg>
//     </soap12:Body>
// </soap12:Envelope>