Creating records in CRM 2011 using JavaScript

Using the CRM Web Service, you can create new entity records, just using JavaScript. The following code demonstrates this:

// Make Struct
function MakeStruct(names) 
{
	var names = names.split(' ');
	var count = names.length;

	function constructor() {
		for (var i = 0; i < count; i++) {
			this[names[i]] = arguments[i];
		}
	}
	return constructor;
}

// CRM Field Struct
var CRMField = MakeStruct("SchemaName Value");

// Call Crm Service
function CallCrmService(soapBody, method)
{
	try 
	{
		var xmlHttpRequest = new ActiveXObject("Msxml2.XMLHTTP");
		xmlHttpRequest.Open("POST", "/mscrmservices/2007/CrmService.asmx", false);
		xmlHttpRequest.setRequestHeader("SOAPAction", "http://schemas.microsoft.com/crm/2007/WebServices/" + method);
		xmlHttpRequest.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
		var xml = "" +
		"" + GenerateAuthenticationHeader() + "" + soapBody + "";
		xmlHttpRequest.setRequestHeader("Content-Length", xml.length);
		xmlHttpRequest.send(xml);

		var resultXml = xmlHttpRequest.responseXML;
		var errorCount = resultXml.selectNodes('//error').length;

		if (errorCount != 0) 
		{
			var msg = resultXml.selectSingleNode('//description').nodeTypedValue;
			alert(msg);

			return null;
		}

		return resultXml;
	}
	catch(err) {
	}

	return null;
}

// Create Record
function CreateRecord(entityName, fields)
{
	try 
	{
		var resultArray = new Array();
		var attributesList = "";

		for(var i = 0; i < fields.length; i++)
		{
			attributesList += "<" + fields[i].SchemaName + ">" + fields[i].Value + "";
		}

		var xml = "" + attributesList + "";
		var resultXml = CallCrmService(xml, 'Create');

		if (resultXml) 
		{
			var newid = resultXml.selectSingleNode('//CreateResult').nodeTypedValue;
			return newid;
		}
	}
	catch(err) {
	}

	return null;
}

// USE
// Create new Contact
function CreateContact()
{
	var fields = [new CRMField('firstname', 'Cornel'), new CRMField('lastname', 'Croitoriu')];
	return CreateRecord('contact', fields); // return new contact id
}

// Create new Annotation
function CreateAnnotation(parentEntityName, parentEntityId, title, text)
{
	var fields = [new CRMField('objecttypecode', parentEntityName), new CRMField('objectid', parentEntityId), new CRMField('subject', title), new CRMField('notetext', text), new CRMField('isdocument', false), new CRMField("mimetype", "text/html")];
	return CreateRecord('annotation', fields); // return new note id
}

// Example
CreateAnnotation('opportunity', 'FD140AAF-4DF4-11DD-BD17-0019B9312238', 'dynamic generated note', 'text goes here…');