Retrieve multiple records using JavaScript SOAP request in MS CRM 2011 !!!

Below example to retrieve accountid based on the account name from account entity:-

function ExecuteRequest(_XML, Message) {

    try {

        var _ResultXML = null;

        var xmlhttp = new XMLHttpRequest();

        xmlhttp.open("POST", Xrm.Page.context.getServerUrl() + "/XRMServices/2011/Organization.svc/web", false);

        xmlhttp.setRequestHeader("Accept", "application/xml, text/xml, */*");

        xmlhttp.setRequestHeader("Content-Type", "text/xml; charset=utf-8");

        xmlhttp.setRequestHeader("SOAPAction", "http://schemas.microsoft.com/xrm/2011/Contracts/Services/IOrganizationService/" + Message);

        xmlhttp.send(_XML);

        _ResultXML = xmlhttp.responseXML;

        var errorCount = _ResultXML.selectNodes('//error').length;

        if (errorCount != 0) {

            var msg = resultXml.selectSingleNode('//description').nodeTypedValue;

            alert(msg);

            _ResultXML = null;

            return _ResultXML;

        }

        else {

            return _ResultXML;

        }

    }

    catch (Err) {

        alert(Err);

        return;

    }

function GetMultipleAccounts(AccountName) {

    var request = "<s:Envelope xmlns:s='http://schemas.xmlsoap.org/soap/envelope/'>" +

                 "<s:Body>" +

                 "<RetrieveMultiple xmlns='http://schemas.microsoft.com/xrm/2011/Contracts/Services'     xmlns:i='http://www.w3.org/2001/XMLSchema-instance'>" +

                 "<query i:type='a:QueryExpression' xmlns:a='http://schemas.microsoft.com/xrm/2011/Contracts'>" +

                 "<a:ColumnSet>" +

                 "<a:AllColumns>false</a:AllColumns>" +

                 "<a:Columns xmlns:b='http://schemas.microsoft.com/2003/10/Serialization/Arrays'>" +

                 "<b:string>accountid</b:string>" +

                 "</a:Columns>" +

                 "</a:ColumnSet>" +

                 "<a:Criteria>" +

                 "<a:Conditions>" +

                 "<a:ConditionExpression>" +

                 "<a:AttributeName>name</a:AttributeName>" +

                 "<a:Operator>Equal</a:Operator>" +

                 "<a:Values xmlns:b='http://schemas.microsoft.com/2003/10/Serialization/Arrays'>" +

                 "<b:anyType i:type='c:string' xmlns:c='http://www.w3.org/2001/XMLSchema'>" + AccountName + "</b:anyType>" +

                 "</a:Values>" +

                 "</a:ConditionExpression>" +

                 "</a:Conditions>" +

                 "<a:FilterOperator>And</a:FilterOperator>" +

                 "<a:Filters />" +

                 "</a:Criteria>" +

                 "<a:Distinct>false</a:Distinct>" +

                 "<a:EntityName>account</a:EntityName>" +

                 "<a:LinkEntities />" +

                 "<a:Orders />" +

                 "<a:PageInfo>" +

                 "<a:Count>0</a:Count>" +

                 "<a:PageNumber>0</a:PageNumber>" +

                 "<a:PagingCookie i:nil='true' />" +

                 "<a:ReturnTotalRecordCount>true</a:ReturnTotalRecordCount>" +

                 "</a:PageInfo>" +

                 "<a:NoLock>false</a:NoLock>" +

                 "</query>" +

                 "</RetrieveMultiple>" +

                 "</s:Body>" +

                 "</s:Envelope>";

    var _ResultXML = ExecuteRequest(request, "RetrieveMultiple");

    var count = _ResultXML.selectSingleNode("//a:TotalRecordCount").text;

    if (count >= 1) {

        var ID = _ResultXML.selectSingleNode("//a:Id").text

        return ID;

    }

    else

        return null;

}

Call GetMultipleAccounts function like as below:-

var _Id = GetMultipleAccounts(“Microsoft”);

Cheers !!!